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External Mail Stopped working

Hi

We are not able to recieve or send any external email, only internal emails are working fine. We have Exchange 2003 SMTP outbound connector is configured to send any outbound emails through the smarthost which is our Mail firewall (MXTREME Mail Firewall). Now when we restart our mail firewall and force the connection from exchange queues it start working for an hour or two and then again external emails stopped working. And if i restart Mail firewall again and then external start working for another 1 hour or two but then goes down.

My SMTP outbound connector shows Red 'X' under Exchange system manager > Tools > Status, when external mails not working. But when i restart my mail firewall then it shows fine.

There are no errors in the exchange event logs but followings are the logs of my Mail Firewall, could this be the issue of my Mail firewall ig yes what is this error mean. Is this kind of denial of service attack?

Mar 31 20:00:03 webmail postfix/smtpd[92594]: disconnect from mail71.messagelabs.com[193.109.255.131]
Mar 31 20:00:03 webmail postfix/smtpd[92594]: connect from mail80.messagelabs.com[195.245.230.163]
Mar 31 20:00:03 webmail postfix/smtpd[92594]: disconnect from mail80.messagelabs.com[195.245.230.163]
Mar 31 20:00:03 webmail postfix/smtpd[92594]: DABF6C49D6: [List: unknown] reject: CONNECT from mail115.messagelabs.com[195.245.231.179]: 450: too many open connections; from=<unknown> to=<unknown>
Mar 31 20:00:08 webmail postfix/cleanup[42156]: warning: end of input while receiving integer data from service unknown_stream
Mar 31 20:00:08 webmail postfix/smtpd[92594]: disconnect from mail115.messagelabs.com[195.245.231.179]
Mar 31 20:00:08 webmail postfix/smtpd[42124]: warning: end of input while receiving string data from service private/rewrite
Mar 31 20:00:08 webmail postfix/smtpd[42124]: warning: rewrite_clnt: bad read: Operation timed out
Mar 31 20:00:08 webmail postfix/smtpd[92594]: connect from mail80.messagelabs.com[195.245.230.163]
Mar 31 20:00:08 webmail postfix/smtpd[92594]: disconnect from mail80.messagelabs.com[195.245.230.163]
Mar 31 20:00:08 webmail postfix/smtpd[92594]: connect from mail72.messagelabs.com[193.109.255.147]
Mar 31 20:00:08 webmail postfix/smtpd[92594]: disconnect from mail72.messagelabs.com[193.109.255.147]
Mar 31 20:00:08 webmail postfix/smtpd[92594]: 1D2AD0F223: [List: unknown] reject: CONNECT from mail78.messagelabs.com[195.245.230.131]: 450: too many open connections; from=<unknown> to=<unknown>
Mar 31 20:00:13 webmail postfix/smtpd[92594]: disconnect from mail78.messagelabs.com[195.245.230.131]
Mar 31 20:00:13 webmail postfix/smtpd[92594]: EFF5240DFC: [List: unknown] reject: CONNECT from mail78.messagelabs.com[195.245.230.131]: 450: too many open connections; from=<unknown> to=<unknown>
Mar 31 20:00:18 webmail postfix/smtpd[92594]: disconnect from mail78.messagelabs.com[195.245.230.131]
Mar 31 20:00:18 webmail postfix/smtpd[92594]: connect from mail133.messagelabs.com[195.245.230.179]
Mar 31 20:00:18 webmail postfix/smtpd[92594]: disconnect from mail133.messagelabs.com[195.245.230.179]
Mar 31 20:00:18 webmail postfix/smtpd[92594]: B104226BBD: [List: unknown] reject: CONNECT from mail71.messagelabs.com[193.109.255.131]: 450: too many open connections; from=<unknown> to=<unknown>
Mar 31 20:00:19 webmail postfix/cleanup[80310]: warning: end of input while receiving integer data from service unknown_stream
Mar 31 20:00:19 webmail postfix/smtpd[80227]: warning: end of input while receiving string data from service private/rewrite
Mar 31 20:00:19 webmail postfix/smtpd[80227]: warning: rewrite_clnt: bad read: Operation timed out
Mar 31 20:00:23 webmail postfix/smtpd[92594]: disconnect from mail71.messagelabs.com[193.109.255.131]
Mar 31 20:00:23 webmail postfix/smtpd[92594]: connect from mail72.messagelabs.com[193.109.255.147]
Mar 31 20:00:23 webmail postfix/smtpd[92594]: disconnect from mail72.messagelabs.com[193.109.255.147]
Mar 31 20:00:23 webmail postfix/smtpd[92594]: connect from mail72.messagelabs.com[193.109.255.147]
Mar 31 20:00:23 webmail postfix/smtpd[92594]: disconnect from mail72.messagelabs.com[193.109.255.147]
Mar 31 20:00:23 webmail postfix/smtpd[92594]: A5BAFC94E3: [List: unknown] reject: CONNECT from mail71.messagelabs.com[193.109.255.131]: 450: too many open connections; from=<unknown> to=<unknown>
Mar 31 20:00:27 webmail postfix/cleanup[15283]: warning: end of input while receiving integer data from service unknown_stream
Mar 31 20:00:27 webmail postfix/smtpd[14656]: warning: end of input while receiving string data from service private/rewrite
Mar 31 20:00:27 webmail postfix/smtpd[14656]: warning: rewrite_clnt: bad read: Operation timed out
Mar 31 20:00:27 webmail postfix/cleanup[16336]: warning: end of input while receiving integer data from service unknown_stream
Mar 31 20:00:27 webmail postfix/smtpd[16171]: warning: end of input while receiving string data from service private/rewrite
Mar 31 20:00:27 webmail postfix/smtpd[16171]: warning: rewrite_clnt: bad read: Operation timed out
Mar 31 20:00:28 webmail postfix/cleanup[23511]: warning: end of input while receiving integer data from service unknown_stream
Mar 31 20:00:28 webmail postfix/smtpd[23455]: warning: end of input while receiving string data from service private/rewrite
Mar 31 20:00:28 webmail postfix/smtpd[23455]: warning: rewrite_clnt: bad read: Operation timed out
Mar 31 20:00:28 webmail postfix/smtpd[92594]: disconnect from mail71.messagelabs.com[193.109.255.131]
Mar 31 20:00:28 webmail postfix/smtpd[92594]: connect from mail72.messagelabs.com[193.109.255.147]
Mar 31 20:00:28 webmail postfix/smtpd[92594]: disconnect from mail72.messagelabs.com[193.109.255.147]
Mar 31 20:00:28 webmail postfix/smtpd[92594]: 24F43C7AAD: [List: unknown] reject: CONNECT from mail78.messagelabs.com[195.245.230.131]: 450: too many open connections; from=<unknown> to=<unknown>
Mar 31 20:00:33 webmail postfix/smtpd[92594]: disconnect from mail78.messagelabs.com[195.245.230.131]
Mar 31 20:00:33 webmail postfix/smtpd[92594]: 515C4C8575: [List: unknown] reject: CONNECT from mail83.messagelabs.com[195.245.231.83]: 450: too many open connections; from=<unknown> to=<unknown>
Mar 31 20:00:38 webmail postfix/smtpd[92594]: disconnect from mail83.messagelabs.com[195.245.231.83]
Mar 31 20:00:38 webmail postfix/smtpd[92594]: A8E53D580C: [List: unknown] reject: CONNECT from mail83.messagelabs.com[195.245.231.83]: 450: too many open connections; from=<unknown> to=<unknown>
Mar 31 20:00:43 webmail postfix/smtpd[92594]: disconnect from mail83.messagelabs.com[195.245.231.83]
Mar 31 20:00:43 webmail postfix/smtpd[92594]: 757320E3CA: [List: unknown] reject: CONNECT from mail83.messagelabs.com[195.245.231.83]: 450: too many open connections; from=<unknown> to=<unknown>
Mar 31 20:00:48 webmail postfix/smtpd[92594]: disconnect from mail83.messagelabs.com[195.245.231.83]
Mar 31 20:00:48 webmail postfix/smtpd[92594]: E681E23E88: [List: unknown] reject: CONNECT from mail83.messagelabs.com[195.245.231.83]: 450: too many open connections; from=<unknown> to=<unknown>
Mar 31 20:00:53 webmail postfix/smtpd[92594]: disconnect from mail83.messagelabs.com[195.245.231.83]
Mar 31 20:00:53 webmail postfix/smtpd[92594]: 15EE1A49F7: [List: unknown] reject: CONNECT from mail78.messagelabs.com[195.245.230.131]: 450: too many open connections; from=<unknown> to=<unknown>
Mar 31 20:00:58 webmail postfix/smtpd[92594]: disconnect from mail78.messagelabs.com[195.245.230.131]
Mar 31 20:00:58 webmail postfix/smtpd[92594]: connect from mail133.messagelabs.com[195.245.230.179]
Mar 31 20:00:58 webmail postfix/smtpd[92594]: disconnect from mail133.messagelabs.com[195.245.230.179]
Mar 31 20:00:58 webmail postfix/smtpd[92594]: 750FA2A7D6: [List: unknown] reject: CONNECT from mail115.messagelabs.com[195.245.231.179]: 450: too many open connections; from=<unknown> to=<unknown>
Mar 31 20:01:03 webmail postfix/smtpd[92594]: disconnect from mail115.messagelabs.com[195.245.231.179]
Mar 31 20:01:03 webmail postfix/smtpd[92594]: 90218BF228: [List: unknown] reject: CONNECT from mail115.messagelabs.com[195.245.231.179]: 450: too many open connections; from=<unknown> to=<unknown>
Mar 31 20:01:08 webmail postfix/smtpd[92594]: disconnect from mail115.messagelabs.com[195.245.231.179]
Mar 31 20:01:08 webmail postfix/smtpd[92594]: 8FB4720D0D: [List: unknown] reject: CONNECT from mail78.messagelabs.com[195.245.230.131]: 450: too many open connections; from=<unknown> to=<unknown>
Mar 31 20:01:13 webmail postfix/smtpd[92594]: disconnect from mail78.messagelabs.com[195.245.230.131]
Mar 31 20:01:13 webmail postfix/smtpd[92594]: connect from mail72.messagelabs.com[193.109.255.147]
Mar 31 20:01:13 webmail postfix/smtpd[92594]: disconnect from mail72.messagelabs.com[193.109.255.147]
Mar 31 20:01:13 webmail postfix/smtpd[92594]: connect from mail114.messagelabs.com[195.245.231.163]
Mar 31 20:01:13 webmail postfix/smtpd[92594]: disconnect from mail114.messagelabs.com[195.245.231.163]
Mar 31 20:01:13 webmail postfix/smtpd[92594]: BE92B9B60B: [List: unknown] reject: CONNECT from mail115.messagelabs.com[195.245.231.179]: 450: too many open connections; from=<unknown> to=<unknown>
Mar 31 20:01:16 webmail postfix/cleanup[68570]: warning: end of input while receiving integer data from service unknown_stream
Mar 31 20:01:16 webmail postfix/smtpd[68514]: warning: end of input while receiving string data from service private/rewrite
Mar 31 20:01:16 webmail postfix/smtpd[68514]: warning: rewrite_clnt: bad read: Operation timed out
Mar 31 20:01:16 webmail postfix/cleanup[69322]: warning: end of input while receiving integer data from service unknown_stream
Mar 31 20:01:16 webmail postfix/smtpd[68654]: warning: end of input while receiving string data from service private/rewrite
Mar 31 20:01:16 webmail postfix/smtpd[68654]: warning: rewrite_clnt: bad read: Operation timed out
Mar 31 20:01:17 webmail postfix/cleanup[69893]: warning: end of input while receiving integer data from service unknown_stream
Mar 31 20:01:17 webmail postfix/smtpd[69853]: warning: end of input while receiving string data from service private/rewrite
Mar 31 20:01:17 webmail postfix/smtpd[69853]: warning: rewrite_clnt: bad read: Operation timed out
Mar 31 20:01:18 webmail postfix/smtpd[92594]: disconnect from mail115.messagelabs.com[195.245.231.179]
Mar 31 20:01:18 webmail postfix/smtpd[92594]: BE11A3C1F8: [List: unknown] reject: CONNECT from mail78.messagelabs.com[195.245.230.131]: 450: too many open connections; from=<unknown> to=<unknown>
Mar 31 20:01:22 webmail postfix/cleanup[73964]: warning: end of input while receiving integer data from service unknown_stream
Mar 31 20:01:22 webmail postfix/smtpd[73936]: warning: end of input while receiving string data from service private/rewrite
Mar 31 20:01:22 webmail postfix/smtpd[73936]: warning: rewrite_clnt: bad read: Operation timed out
Mar 31 20:01:23 webmail postfix/smtpd[92594]: disconnect from mail78.messagelabs.com[195.245.230.131]
Mar 31 20:01:23 webmail postfix/smtpd[92594]: connect from mail72.messagelabs.com[193.109.255.147]
Mar 31 20:01:23 webmail postfix/smtpd[92594]: disconnect from mail72.messagelabs.com[193.109.255.147]
Mar 31 20:01:23 webmail postfix/smtpd[92594]: 4D43582F8A: [List: unknown] reject: CONNECT from mail83.messagelabs.com[195.245.231.83]: 450: too many open connections; from=<unknown> to=<unknown>
Mar 31 20:01:26 webmail postfix/cleanup[76978]: warning: end of input while receiving integer data from service unknown_stream
Mar 31 20:01:26 webmail postfix/smtpd[76924]: warning: end of input while receiving string data from service private/rewrite
Mar 31 20:01:26 webmail postfix/smtpd[76924]: warning: rewrite_clnt: bad read: Operation timed out
Mar 31 20:01:28 webmail postfix/smtpd[92594]: disconnect from mail83.messagelabs.com[195.245.231.83]
Mar 31 20:01:28 webmail postfix/smtpd[92594]: A72B357A02: [List: unknown] reject: CONNECT from mail78.messagelabs.com[195.245.230.131]: 450: too many open connections; from=<unknown> to=<unknown>
Mar 31 20:01:31 webmail postfix/cleanup[81507]: warning: end of input while receiving integer data from service unknown_stream
Mar 31 20:01:31 webmail postfix/smtpd[81496]: warning: end of input while receiving string data from service private/rewrite
Mar 31 20:01:31 webmail postfix/smtpd[81496]: warning: rewrite_clnt: bad read: Operation timed out
Mar 31 20:01:33 webmail postfix/smtpd[92594]: disconnect from mail78.messagelabs.com[195.245.230.131]
Mar 31 20:01:33 webmail postfix/smtpd[92594]: connect from mail80.messagelabs.com[195.245.230.163]
Mar 31 20:01:33 webmail postfix/smtpd[92594]: disconnect from mail80.messagelabs.com[195.245.230.163]
Mar 31 20:01:33 webmail postfix/smtpd[92594]: connect from mail72.messagelabs.com[193.109.255.147]
Mar 31 20:01:33 webmail postfix/smtpd[92594]: disconnect from mail72.messagelabs.com[193.109.255.147]
Mar 31 20:01:33 webmail postfix/smtpd[92594]: connect from mail133.messagelabs.com[195.245.230.179]
Mar 31 20:01:33 webmail postfix/smtpd[92594]: disconnect from mail133.messagelabs.com[195.245.230.179]
Mar 31 20:01:33 webmail postfix/smtpd[92594]: 64340A3E8D: [List: unknown] reject: CONNECT from mail71.messagelabs.com[193.109.255.131]: 450: too many open connections; from=<unknown> to=<unknown>
Mar 31 20:01:37 webmail postfix/cleanup[87121]: warning: end of input while receiving integer data from service unknown_stream
Mar 31 20:01:37 webmail postfix/smtpd[87116]: warning: end of input while receiving string data from service private/rewrite
Mar 31 20:01:37 webmail postfix/smtpd[87116]: warning: rewrite_clnt: bad read: Operation timed out
Mar 31 20:01:38 webmail postfix/smtpd[92594]: disconnect from mail71.messagelabs.com[193.109.255.131]
Mar 31 20:01:38 webmail postfix/smtpd[65852]: 6C11574978: [List: unknown] reject: CONNECT from mail78.messagelabs.com[195.245.230.131]: 450: too many open connections; from=<unknown> to=<unknown>
Mar 31 20:01:40 webmail postfix/cleanup[88915]: warning: end of input while receiving integer data from service unknown_stream
Mar 31 20:01:40 webmail postfix/smtpd[88820]: warning: end of input while receiving string data from service private/rewrite
Mar 31 20:01:40 webmail postfix/smtpd[88820]: warning: rewrite_clnt: bad read: Operation timed out
Mar 31 20:01:43 webmail postfix/smtpd[65852]: disconnect from mail78.messagelabs.com[195.245.230.131]
Mar 31 20:01:43 webmail postfix/smtpd[65852]: 971FBB1C76: [List: unknown] reject: CONNECT from mail71.messagelabs.com[193.109.255.131]: 450: too many open connections; from=<unknown> to=<unknown>
Mar 31 20:01:44 webmail postfix/cleanup[92857]: warning: end of input while receiving integer data from service unknown_stream
Mar 31 20:01:44 webmail postfix/smtpd[92765]: warning: end of input while receiving string data from service private/rewrite
Mar 31 20:01:44 webmail postfix/smtpd[92765]: warning: rewrite_clnt: bad read: Operation timed out
Mar 31 20:01:47 webmail postfix/cleanup[94689]: warning: end of input while receiving integer data from service unknown_stream
Mar 31 20:01:47 webmail postfix/smtpd[94601]: warning: end of input while receiving string data from service private/rewrite
Mar 31 20:01:47 webmail postfix/smtpd[94601]: warning: rewrite_clnt: bad read: Operation timed out
Mar 31 20:01:48 webmail postfix/smtpd[65852]: disconnect from mail71.messagelabs.com[193.109.255.131]
Mar 31 20:01:48 webmail postfix/smtpd[65852]: connect from mail72.messagelabs.com[193.109.255.147]
Mar 31 20:01:48 webmail postfix/smtpd[65852]: disconnect from mail72.messagelabs.com[193.109.255.147]
Mar 31 20:01:48 webmail postfix/smtpd[65852]: B4E4E2F25D: [List: unknown] reject: CONNECT from mail115.messagelabs.com[195.245.231.179]: 450: too many open connections; from=<unknown> to=<unknown>
Mar 31 20:01:53 webmail postfix/smtpd[65852]: disconnect from mail115.messagelabs.com[195.245.231.179]
Mar 31 20:01:53 webmail postfix/smtpd[65852]: connect from mail80.messagelabs.com[195.245.230.163]
Mar 31 20:01:53 webmail postfix/smtpd[65852]: disconnect from mail80.messagelabs.com[195.245.230.163]
Mar 31 20:01:53 webmail postfix/smtpd[65852]: 49C137D0C8: [List: unknown] reject: CONNECT from mail71.messagelabs.com[193.109.255.131]: 450: too many open connections; from=<unknown> to=<unknown>
Mar 31 20:01:58 webmail postfix/smtpd[65852]: disconnect from mail71.messagelabs.com[193.109.255.131]
Mar 31 20:01:58 webmail postfix/smtpd[65852]: connect from mail82.messagelabs.com[195.245.231.67]
Mar 31 20:01:58 webmail postfix/smtpd[65852]: disconnect from mail82.messagelabs.com[195.245.231.67]
Mar 31 20:01:58 webmail postfix/smtpd[65852]: connect from mail133.messagelabs.com[195.245.230.179]
Mar 31 20:01:58 webmail postfix/smtpd[65852]: disconnect from mail133.messagelabs.com[195.245.230.179]
Mar 31 20:01:58 webmail postfix/smtpd[65852]: connect from enfieldmail.europe.alliedww.com[193.240.246.200]
Mar 31 20:01:58 webmail postfix/smtpd[65852]: disconnect from enfieldmail.europe.alliedww.com[193.240.246.200]
Mar 31 20:01:58 webmail postfix/smtpd[65852]: connect from mail80.messagelabs.com[195.245.230.163]
Mar 31 20:01:58 webmail postfix/smtpd[65852]: disconnect from mail80.messagelabs.com[195.245.230.163]
Mar 31 20:01:58 webmail postfix/smtpd[65852]: 370A602F93: [List: unknown] reject: CONNECT from mail115.messagelabs.com[195.245.231.179]: 450: too many open connections; from=<unknown> to=<unknown>
Mar 31 20:02:03 webmail postfix/smtpd[65852]: disconnect from mail115.messagelabs.com[195.245.231.179]
Mar 31 20:02:03 webmail postfix/smtpd[65852]: connect from mail80.messagelabs.com[195.245.230.163]
Mar 31 20:02:03 webmail postfix/smtpd[65852]: disconnect from mail80.messagelabs.com[195.245.230.163]
Mar 31 20:02:03 webmail postfix/smtpd[65852]: connect from mail82.messagelabs.com[195.245.231.67]
Mar 31 20:02:03 webmail postfix/smtpd[65852]: disconnect from mail82.messagelabs.com[195.245.231.67]
Mar 31 20:02:03 webmail postfix/smtpd[65852]: connect from mail72.messagelabs.com[193.109.255.147]
Mar 31 20:02:03 webmail postfix/smtpd[65852]: disconnect from mail72.messagelabs.com[193.109.255.147]
Mar 31 20:02:03 webmail postfix/smtpd[65852]: D30503E37C: [List: unknown] reject: CONNECT from mail71.messagelabs.com[193.109.255.131]: 450: too many open connections; from=<unknown> to=<unknown>
Mar 31 20:02:08 webmail postfix/smtpd[65852]: disconnect from mail71.messagelabs.com[193.109.255.131]
Mar 31 20:02:08 webmail postfix/smtpd[65852]: connect from mail80.messagelabs.com[195.245.230.163]
Mar 31 20:02:08 webmail postfix/smtpd[65852]: disconnect from mail80.messagelabs.com[195.245.230.163]
Mar 31 20:02:08 webmail postfix/smtpd[65852]: 9FC0A84959: [List: unknown] reject: CONNECT from mail71.messagelabs.com[193.109.255.131]: 450: too many open connections; from=<unknown> to=<unknown>
Mar 31 20:02:11 webmail postfix/cleanup[16621]: warning: end of input while receiving integer data from service unknown_stream
Mar 31 20:02:11 webmail postfix/smtpd[16591]: warning: end of input while receiving string data from service private/rewrite
Mar 31 20:02:11 webmail postfix/smtpd[16591]: warning: rewrite_clnt: bad read: Operation timed out
Mar 31 20:02:13 webmail postfix/smtpd[65852]: disconnect from mail71.messagelabs.com[193.109.255.131]
Mar 31 20:02:13 webmail postfix/smtpd[65852]: 439A011CE3: [List: unknown] reject: CONNECT from mail78.messagelabs.com[195.245.230.131]: 450: too many open connections; from=<unknown> to=<unknown>
Mar 31 20:02:18 webmail postfix/smtpd[65852]: disconnect from mail78.messagelabs.com[195.245.230.131]
Mar 31 20:02:18 webmail postfix/smtpd[65852]: connect from mail72.messagelabs.com[193.109.255.147]
Mar 31 20:02:18 webmail postfix/smtpd[65852]: disconnect from mail72.messagelabs.com[193.109.255.147]
Mar 31 20:02:18 webmail postfix/smtpd[65852]: 9E7B6AF2B2: [List: unknown] reject: CONNECT from mail71.messagelabs.com[193.109.255.131]: 450: too many open connections; from=<unknown> to=<unknown>
Mar 31 20:02:20 webmail postfix/cleanup[24383]: warning: end of input while receiving integer data from service unknown_stream
Mar 31 20:02:20 webmail postfix/smtpd[19456]: warning: end of input while receiving string data from service private/rewrite
Mar 31 20:02:20 webmail postfix/smtpd[19456]: warning: rewrite_clnt: bad read: Operation timed out
Mar 31 20:02:21 webmail postfix/cleanup[25334]: warning: end of input while receiving integer data from service unknown_stream
Mar 31 20:02:21 webmail postfix/smtpd[25281]: warning: end of input while receiving string data from service private/rewrite
Mar 31 20:02:21 webmail postfix/smtpd[25281]: warning: rewrite_clnt: bad read: Operation timed out
Mar 31 20:02:23 webmail postfix/cleanup[27473]: warning: end of input while receiving integer data from service unknown_stream
Mar 31 20:02:23 webmail postfix/smtpd[27423]: warning: end of input while receiving string data from service private/rewrite
Mar 31 20:02:23 webmail postfix/smtpd[27423]: warning: rewrite_clnt: bad read: Operation timed out
Mar 31 20:02:23 webmail postfix/smtpd[65852]: disconnect from mail71.messagelabs.com[193.109.255.131]
Mar 31 20:02:23 webmail postfix/smtpd[65852]: FD76A20DAF: [List: unknown] reject: CONNECT from mail115.messagelabs.com[195.245.231.179]: 450: too many open connections; from=<unknown> to=<unknown>
Mar 31 20:02:28 webmail postfix/cleanup[31422]: warning: end of input while receiving integer data from service unknown_stream
Mar 31 20:02:28 webmail postfix/smtpd[31389]: warning: end of input while receiving string data from service private/rewrite
Mar 31 20:02:28 webmail postfix/smtpd[31389]: warning: rewrite_clnt: bad read: Operation timed out
Mar 31 20:02:28 webmail postfix/smtpd[65852]: disconnect from mail115.messagelabs.com[195.245.231.179]
Mar 31 20:02:28 webmail postfix/smtpd[65852]: FB1C9DD0A5: [List: unknown] reject: CONNECT from mail115.messagelabs.com[195.245.231.179]: 450: too many open connections; from=<unknown> to=<unknown>
Mar 31 20:02:33 webmail postfix/cleanup[35892]: warning: end of input while receiving integer data from service unknown_stream
Mar 31 20:02:33 webmail postfix/smtpd[35864]: warning: end of input while receiving string data from service private/rewrite
Mar 31 20:02:33 webmail postfix/smtpd[35864]: warning: rewrite_clnt: bad read: Operation timed out
Mar 31 20:02:33 webmail postfix/smtpd[65852]: disconnect from mail115.messagelabs.com[195.245.231.179]
Mar 31 20:02:33 webmail postfix/smtpd[65852]: connect from mail82.messagelabs.com[195.245.231.67]
Mar 31 20:02:33 webmail postfix/smtpd[65852]: disconnect from mail82.messagelabs.com[195.245.231.67]
Mar 31 20:02:33 webmail postfix/smtpd[65852]: 4E0CB1B6E5: [List: unknown] reject: CONNECT from mail83.messagelabs.com[195.245.231.83]: 450: too many open connections; from=<unknown> to=<unknown>
Mar 31 20:02:37 webmail postfix/cleanup[39623]: warning: end of input while receiving integer data from service unknown_stream
Mar 31 20:02:37 webmail postfix/smtpd[35099]: warning: end of input while receiving string data from service private/rewrite
Mar 31 20:02:37 webmail postfix/smtpd[35099]: warning: rewrite_clnt: bad read: Operation timed out
Mar 31 20:02:38 webmail postfix/smtpd[65852]: disconnect from mail83.messagelabs.com[195.245.231.83]
Mar 31 20:02:38 webmail postfix/smtpd[65852]: E8B35CC13A: [List: unknown] reject: CONNECT from mail115.messagelabs.com[195.245.231.179]: 450: too many open connections; from=<unknown> to=<unknown>
Mar 31 20:02:41 webmail postfix/cleanup[43133]: warning: end of input while receiving integer data from service unknown_stream
Mar 31 20:02:41 webmail postfix/smtpd[38764]: warning: end of input while receiving string data from service private/rewrite
Mar 31 20:02:41 webmail postfix/smtpd[38764]: warning: rewrite_clnt: bad read: Operation timed out
Mar 31 20:02:43 webmail postfix/smtpd[65852]: disconnect from mail115.messagelabs.com[195.245.231.179]
Mar 31 20:02:43 webmail postfix/smtpd[65852]: connect from mail72.messagelabs.com[193.109.255.147]
Mar 31 20:02:44 webmail postfix/cleanup[68570]: F5B5782FCC: entry_time=1238526164.011088
Mar 31 20:02:44 webmail postfix/smtpd[65852]: F5B5782FCC: helo=mail72.messagelabs.com
Mar 31 20:02:44 webmail postfix/smtpd[65852]: F5B5782FCC: client=mail72.messagelabs.com[193.109.255.147] untrusted=1
Mar 31 20:02:46 webmail postfix/cleanup[46639]: warning: end of input while receiving integer data from service unknown_stream
Mar 31 20:02:46 webmail postfix/cleanup[46671]: warning: end of input while receiving integer data from service unknown_stream
Mar 31 20:02:46 webmail postfix/smtpd[46554]: warning: end of input while receiving string data from service private/rewrite
Mar 31 20:02:46 webmail postfix/smtpd[46554]: warning: rewrite_clnt: bad read: Operation timed out
Mar 31 20:02:46 webmail postfix/smtpd[46478]: warning: end of input while receiving string data from service private/rewrite
Mar 31 20:02:46 webmail postfix/smtpd[46478]: warning: rewrite_clnt: bad read: Operation timed out
Mar 31 20:02:48 webmail postfix/cleanup[48660]: warning: end of input while receiving integer data from service unknown_stream
Mar 31 20:02:48 webmail postfix/smtpd[48566]: warning: end of input while receiving string data from service private/rewrite
Mar 31 20:02:48 webmail postfix/smtpd[48566]: warning: rewrite_clnt: bad read: Operation timed out
Mar 31 20:02:54 webmail postfix/cleanup[54093]: warning: end of input while receiving integer data from service unknown_stream
Mar 31 20:02:54 webmail postfix/smtpd[53174]: warning: end of input while receiving string data from service private/rewrite
Mar 31 20:02:54 webmail postfix/smtpd[53174]: warning: rewrite_clnt: bad read: Operation timed out
Mar 31 20:03:03 webmail postfix/cleanup[60764]: warning: end of input while receiving integer data from service unknown_stream
Mar 31 20:03:03 webmail postfix/smtpd[60675]: warning: end of input while receiving string data from service private/rewrite
Mar 31 20:03:03 webmail postfix/smtpd[60675]: warning: rewrite_clnt: bad read: Operation timed out
Mar 31 20:03:03 webmail postfix/cleanup[60914]: warning: end of input while receiving integer data from service unknown_stream
Mar 31 20:03:03 webmail postfix/smtpd[60854]: warning: end of input while receiving string data from service private/rewrite
Mar 31 20:03:03 webmail postfix/smtpd[60854]: warning: rewrite_clnt: bad read: Operation timed out
Mar 31 20:03:06 webmail postfix/cleanup[63715]: warning: end of input while receiving integer data from service unknown_stream
Mar 31 20:03:06 webmail postfix/smtpd[63651]: warning: end of input while receiving string data from service private/rewrite
Mar 31 20:03:06 webmail postfix/smtpd[63651]: warning: rewrite_clnt: bad read: Operation timed out
Mar 31 20:03:11 webmail postfix/cleanup[68605]: warning: end of input while receiving integer data from service unknown_stream
Mar 31 20:03:11 webmail postfix/smtpd[68594]: warning: end of input while receiving string data from service private/rewrite
Mar 31 20:03:11 webmail postfix/smtpd[68594]: warning: rewrite_clnt: bad read: Operation timed out
Mar 31 20:03:20 webmail postfix/cleanup[75414]: warning: end of input while receiving integer data from service unknown_stream
Mar 31 20:03:20 webmail postfix/smtpd[75330]: warning: end of input while receiving string data from service private/rewrite
Mar 31 20:03:20 webmail postfix/smtpd[75330]: warning: rewrite_clnt: bad read: Operation timed out
Mar 31 20:03:25 webmail postfix/cleanup[81070]: warning: end of input while receiving integer data from service unknown_stream
Mar 31 20:03:25 webmail postfix/smtpd[80992]: warning: end of input while receiving string data from service private/rewrite
Mar 31 20:03:25 webmail postfix/smtpd[80992]: warning: rewrite_clnt: bad read: Operation timed out
Mar 31 20:03:31 webmail postfix/cleanup[85665]: warning: end of input while receiving integer data from service unknown_stream
Mar 31 20:03:31 webmail postfix/smtpd[85627]: warning: end of input while receiving string data from service private/rewrite
Mar 31 20:03:31 webmail postfix/smtpd[85627]: warning: rewrite_clnt: bad read: Operation timed out
Mar 31 20:03:33 webmail postfix/cleanup[87738]: warning: end of input while receiving integer data from service unknown_stream
Mar 31 20:03:33 webmail postfix/smtpd[87718]: warning: end of input while receiving string data from service private/rewrite
Mar 31 20:03:33 webmail postfix/smtpd[87718]: warning: rewrite_clnt: bad read: Operation timed out
Mar 31 20:04:19 webmail postfix/cleanup[25861]: warning: end of input while receiving integer data from service unknown_stream
Mar 31 20:04:19 webmail postfix/smtpd[25829]: warning: end of input while receiving string data from service private/rewrite
Mar 31 20:04:19 webmail postfix/smtpd[25829]: warning: rewrite_clnt: bad read: Operation timed out
Mar 31 20:04:31 webmail postfix/cleanup[35683]: warning: end of input while receiving integer data from service unknown_stream
Mar 31 20:04:31 webmail postfix/smtpd[35598]: warning: end of input while receiving string data from service private/rewrite
Mar 31 20:04:31 webmail postfix/smtpd[35598]: warning: rewrite_clnt: bad read: Operation timed out
Mar 31 20:04:34 webmail postfix/cleanup[37869]: warning: end of input while receiving integer data from service unknown_stream
Mar 31 20:04:34 webmail postfix/smtpd[37812]: warning: end of input while receiving string data from service private/rewrite
Mar 31 20:04:34 webmail postfix/smtpd[37812]: warning: rewrite_clnt: bad read: Operation timed out
Mar 31 20:04:36 webmail postfix/cleanup[41346]: warning: end of input while receiving integer data from service unknown_stream
Mar 31 20:04:36 webmail postfix/smtpd[41319]: warning: end of input while receiving string data from service private/rewrite
Mar 31 20:04:36 webmail postfix/smtpd[41319]: warning: rewrite_clnt: bad read: Operation timed out
Mar 31 20:04:42 webmail postfix/cleanup[45398]: warning: end of input while receiving integer data from service unknown_stream
Mar 31 20:04:42 webmail postfix/smtpd[45353]: warning: end of input while receiving string data from service private/rewrite
Mar 31 20:04:42 webmail postfix/smtpd[45353]: warning: rewrite_clnt: bad read: Operation timed out
Mar 31 20:04:45 webmail postfix/cleanup[49291]: warning: end of input while receiving integer data from service unknown_stream
Mar 31 20:04:45 webmail postfix/smtpd[49288]: warning: end of input while receiving string data from service private/rewrite
Mar 31 20:04:45 webmail postfix/smtpd[49288]: warning: rewrite_clnt: bad read: Operation timed out
Mar 31 20:04:49 webmail postfix/cleanup[52028]: warning: end of input while receiving integer data from service unknown_stream
Mar 31 20:04:49 webmail postfix/smtpd[52005]: warning: end of input while receiving string data from service private/rewrite
Mar 31 20:04:49 webmail postfix/smtpd[52005]: warning: rewrite_clnt: bad read: Operation timed out
Mar 31 20:04:52 webmail postfix/cleanup[53860]: warning: end of input while receiving integer data from service unknown_stream
Mar 31 20:04:52 webmail postfix/smtpd[53859]: warning: end of input while receiving string data from service private/rewrite
Mar 31 20:04:52 webmail postfix/smtpd[53859]: warning: rewrite_clnt: bad read: Operation timed out
Mar 31 20:05:14 webmail postfix/cleanup[74975]: warning: end of input while receiving integer data from service unknown_stream
Mar 31 20:05:14 webmail postfix/smtpd[74899]: warning: end of input while receiving string data from service private/rewrite
Mar 31 20:05:14 webmail postfix/smtpd[74899]: warning: rewrite_clnt: bad read: Operation timed out
Mar 31 20:05:17 webmail postfix/cleanup[77058]: warning: end of input while receiving integer data from service unknown_stream
Mar 31 20:05:17 webmail postfix/smtpd[77045]: warning: end of input while receiving string data from service private/rewrite
Mar 31 20:05:17 webmail postfix/smtpd[77045]: warning: rewrite_clnt: bad read: Operation timed out
Mar 31 20:05:56 webmail postfix/cleanup[10677]: warning: end of input while receiving integer data from service unknown_stream
Mar 31 20:05:56 webmail postfix/smtpd[10619]: warning: end of input while receiving string data from service private/rewrite
Mar 31 20:05:56 webmail postfix/smtpd[10619]: warning: rewrite_clnt: bad read: Operation timed out
Mar 31 20:06:48 webmail postfix/cleanup[53143]: warning: end of input while receiving integer data from service unknown_stream
Mar 31 20:06:48 webmail postfix/smtpd[53097]: warning: end of input while receiving string data from service private/rewrite
Mar 31 20:06:48 webmail postfix/smtpd[53097]: warning: rewrite_clnt: bad read: Operation timed out
Mar 31 20:07:00 webmail postfix/cleanup[63817]: warning: end of input while receiving integer data from service unknown_stream
Mar 31 20:07:00 webmail postfix/smtpd[63724]: warning: end of input while receiving string data from service private/rewrite
Mar 31 20:07:00 webmail postfix/smtpd[63724]: warning: rewrite_clnt: bad read: Operation timed out
Mar 31 20:07:08 webmail postfix/cleanup[69628]: warning: end of input while receiving integer data from service unknown_stream
Mar 31 20:07:08 webmail postfix/smtpd[69548]: warning: end of input while receiving string data from service private/rewrite
Mar 31 20:07:08 webmail postfix/smtpd[69548]: warning: rewrite_clnt: bad read: Operation timed out
Mar 31 20:07:33 webmail postfix/cleanup[91430]: warning: end of input while receiving integer data from service unknown_stream
Mar 31 20:07:33 webmail postfix/smtpd[91330]: warning: end of input while receiving string data from service private/rewrite
Mar 31 20:07:33 webmail postfix/smtpd[91330]: warning: rewrite_clnt: bad read: Operation timed out
Mar 31 20:07:48 webmail postfix/cleanup[4894]: warning: end of input while receiving integer data from service unknown_stream
Mar 31 20:07:48 webmail postfix/smtpd[4812]: warning: end of input while receiving string data from service private/rewrite
Mar 31 20:07:48 webmail postfix/smtpd[4812]: warning: rewrite_clnt: bad read: Operation timed out
Mar 31 20:08:10 webmail postfix/cleanup[22830]: warning: end of input while receiving integer data from service unknown_stream
Mar 31 20:08:10 webmail postfix/smtpd[22734]: warning: end of input while receiving string data from service private/rewrite
Mar 31 20:08:10 webmail postfix/smtpd[22734]: warning: rewrite_clnt: bad read: Operation timed out
Mar 31 20:08:12 webmail postfix/cleanup[23653]: warning: end of input while receiving integer data from service unknown_stream
Mar 31 20:08:12 webmail postfix/smtpd[23636]: warning: end of input while receiving string data from service private/rewrite
Mar 31 20:08:12 webmail postfix/smtpd[23636]: warning: rewrite_clnt: bad read: Operation timed out
Mar 31 20:08:20 webmail postfix/smtpd[22734]: warning: connect #1 to subsystem private/rewrite: Connection refused
Mar 31 20:08:22 webmail postfix/smtpd[23636]: warning: connect #1 to subsystem private/rewrite: Connection refused
Mar 31 20:08:25 webmail postfix/cleanup[35711]: warning: end of input while receiving integer data from service unknown_stream
Mar 31 20:08:25 webmail postfix/smtpd[35684]: warning: end of input while receiving string data from service private/rewrite
Mar 31 20:08:25 webmail postfix/smtpd[35684]: warning: rewrite_clnt: bad read: Operation timed out
Mar 31 20:08:27 webmail postfix/cleanup[37872]: warning: end of input while receiving integer data from service unknown_stream
Mar 31 20:08:27 webmail postfix/smtpd[37783]: warning: end of input while receiving string data from service private/rewrite
Mar 31 20:08:27 webmail postfix/smtpd[37783]: warning: rewrite_clnt: bad read: Operation timed out
Mar 31 20:08:30 webmail postfix/smtpd[22734]: warning: connect #2 to subsystem private/rewrite: Connection refused
Mar 31 20:08:31 webmail postfix/cleanup[40741]: warning: end of input while receiving integer data from service unknown_stream
Mar 31 20:08:31 webmail postfix/smtpd[40693]: warning: end of input while receiving string data from service private/rewrite
Mar 31 20:08:31 webmail postfix/smtpd[40693]: warning: rewrite_clnt: bad read: Operation timed out
Mar 31 20:08:32 webmail postfix/smtpd[23636]: warning: connect #2 to subsystem private/rewrite: Connection refused
Mar 31 20:08:35 webmail postfix/smtpd[35684]: warning: connect #1 to subsystem private/rewrite: Connection refused
Mar 31 20:08:37 webmail postfix/smtpd[37783]: warning: connect #1 to subsystem private/rewrite: Connection refused
Mar 31 20:08:39 webmail postfix/cleanup[47947]: warning: end of input while receiving integer data from service unknown_stream
Mar 31 20:08:39 webmail postfix/smtpd[47911]: warning: end of input while receiving string data from service private/rewrite
Mar 31 20:08:39 webmail postfix/smtpd[47911]: warning: rewrite_clnt: bad read: Operation timed out
Mar 31 20:08:40 webmail postfix/smtpd[22734]: warning: connect #3 to subsystem private/rewrite: Connection refused
Mar 31 20:08:41 webmail postfix/smtpd[40693]: warning: connect #1 to subsystem private/rewrite: Connection refused
Mar 31 20:08:42 webmail postfix/smtpd[23636]: warning: connect #3 to subsystem private/rewrite: Connection refused
Mar 31 20:08:45 webmail postfix/smtpd[35684]: warning: connect #2 to subsystem private/rewrite: Connection refused
Mar 31 20:08:47 webmail postfix/smtpd[37783]: warning: connect #2 to subsystem private/rewrite: Connection refused
Mar 31 20:08:49 webmail postfix/smtpd[47911]: warning: connect #1 to subsystem private/rewrite: Connection refused
Mar 31 20:08:50 webmail postfix/smtpd[22734]: warning: connect #4 to subsystem private/rewrite: Connection refused
Mar 31 20:08:51 webmail postfix/cleanup[57249]: warning: end of input while receiving integer data from service unknown_stream
Mar 31 20:08:51 webmail postfix/smtpd[56940]: warning: end of input while receiving string data from service private/rewrite
Mar 31 20:08:51 webmail postfix/smtpd[56940]: warning: rewrite_clnt: bad read: Operation timed out
Mar 31 20:08:51 webmail postfix/smtpd[40693]: warning: connect #2 to subsystem private/rewrite: Connection refused
Mar 31 20:08:52 webmail postfix/smtpd[23636]: warning: connect #4 to subsystem private/rewrite: Connection refused
Mar 31 20:08:53 webmail postfix/cleanup[58653]: warning: end of input while receiving integer data from service unknown_stream
Mar 31 20:08:53 webmail postfix/smtpd[58607]: warning: end of input while receiving string data from service private/rewrite
Mar 31 20:08:53 webmail postfix/smtpd[58607]: warning: rewrite_clnt: bad read: Operation timed out
Mar 31 20:08:55 webmail postfix/smtpd[35684]: warning: connect #3 to subsystem private/rewrite: Connection refused
Mar 31 20:08:57 webmail postfix/smtpd[37783]: warning: connect #3 to subsystem private/rewrite: Connection refused
Mar 31 20:08:57 webmail postfix/cleanup[63453]: warning: end of input while receiving integer data from service unknown_stream
Mar 31 20:08:57 webmail postfix/smtpd[63406]: warning: end of input while receiving string data from service private/rewrite
Mar 31 20:08:57 webmail postfix/smtpd[63406]: warning: rewrite_clnt: bad read: Operation timed out
Mar 31 20:08:58 webmail postfix/cleanup[63507]: warning: end of input while receiving integer data from service unknown_stream
Mar 31 20:08:58 webmail postfix/smtpd[63470]: warning: end of input while receiving string data from service private/rewrite
Mar 31 20:08:58 webmail postfix/smtpd[63470]: warning: rewrite_clnt: bad read: Operation timed out
Mar 31 20:08:59 webmail postfix/smtpd[47911]: warning: connect #2 to subsystem private/rewrite: Connection refused
Mar 31 20:09:00 webmail postfix/smtpd[22734]: warning: connect #5 to subsystem private/rewrite: Connection refused
Mar 31 20:09:01 webmail postfix/smtpd[56940]: warning: connect #1 to subsystem private/rewrite: Connection refused
Mar 31 20:09:01 webmail postfix/smtpd[40693]: warning: connect #3 to subsystem private/rewrite: Connection refused
Mar 31 20:09:02 webmail postfix/smtpd[23636]: warning: connect #5 to subsystem private/rewrite: Connection refused
Mar 31 20:09:03 webmail postfix/smtpd[58607]: warning: connect #1 to subsystem private/rewrite: Connection refused
Mar 31 20:09:03 webmail postfix/cleanup[68807]: warning: end of input while receiving integer data from service unknown_stream
Mar 31 20:09:03 webmail postfix/smtpd[68039]: warning: end of input while receiving string data from service private/rewrite
Mar 31 20:09:03 webmail postfix/smtpd[68039]: warning: rewrite_clnt: bad read: Operation timed out
Mar 31 20:09:05 webmail postfix/smtpd[35684]: warning: connect #4 to subsystem private/rewrite: Connection refused
Mar 31 20:09:07 webmail postfix/smtpd[37783]: warning: connect #4 to subsystem private/rewrite: Connection refused
Mar 31 20:09:07 webmail postfix/smtpd[63406]: warning: connect #1 to subsystem private/rewrite: Connection refused
Mar 31 20:09:08 webmail postfix/smtpd[63470]: warning: connect #1 to subsystem private/rewrite: Connection refused
Mar 31 20:09:09 webmail postfix/smtpd[47911]: warning: connect #3 to subsystem private/rewrite: Connection refused
Mar 31 20:09:10 webmail postfix/smtpd[22734]: warning: connect #6 to subsystem private/rewrite: Connection refused
Mar 31 20:09:11 webmail postfix/smtpd[56940]: warning: connect #2 to subsystem private/rewrite: Connection refused
Mar 31 20:09:11 webmail postfix/smtpd[40693]: warning: connect #4 to subsystem private/rewrite: Connection refused
Mar 31 20:09:12 webmail postfix/smtpd[23636]: warning: connect #6 to subsystem private/rewrite: Connection refused
Mar 31 20:09:13 webmail postfix/smtpd[58607]: warning: connect #2 to subsystem private/rewrite: Connection refused
Mar 31 20:09:13 webmail postfix/smtpd[68039]: warning: connect #1 to subsystem private/rewrite: Connection refused
Mar 31 20:09:15 webmail postfix/smtpd[35684]: warning: connect #5 to subsystem private/rewrite: Connection refused
Mar 31 20:09:17 webmail postfix/smtpd[37783]: warning: connect #5 to subsystem private/rewrite: Connection refused
Mar 31 20:09:17 webmail postfix/smtpd[63406]: warning: connect #2 to subsystem private/rewrite: Connection refused
Mar 31 20:09:18 webmail postfix/smtpd[63470]: warning: connect #2 to subsystem private/rewrite: Connection refused
Mar 31 20:09:19 webmail postfix/smtpd[47911]: warning: connect #4 to subsystem private/rewrite: Connection refused
Mar 31 20:09:20 webmail postfix/smtpd[22734]: warning: connect #7 to subsystem private/rewrite: Connection refused
Mar 31 20:09:21 webmail postfix/cleanup[82841]: warning: end of input while receiving integer data from service unknown_stream
Mar 31 20:09:21 webmail postfix/smtpd[79376]: warning: end of input while receiving string data from service private/rewrite
Mar 31 20:09:21 webmail postfix/smtpd[79376]: warning: rewrite_clnt: bad read: Operation timed out
Mar 31 20:09:21 webmail postfix/smtpd[56940]: warning: connect #3 to subsystem private/rewrite: Connection refused
Mar 31 20:09:21 webmail postfix/smtpd[40693]: warning: connect #5 to subsystem private/rewrite: Connection refused
Mar 31 20:09:22 webmail postfix/smtpd[23636]: warning: connect #7 to subsystem private/rewrite: Connection refused
Mar 31 20:09:23 webmail postfix/smtpd[58607]: warning: connect #3 to subsystem private/rewrite: Connection refused
Mar 31 20:09:23 webmail postfix/smtpd[68039]: warning: connect #2 to subsystem private/rewrite: Connection refused
Mar 31 20:09:25 webmail postfix/smtpd[35684]: warning: connect #6 to subsystem private/rewrite: Connection refused
Mar 31 20:09:27 webmail postfix/smtpd[37783]: warning: connect #6 to subsystem private/rewrite: Connection refused
Mar 31 20:09:27 webmail postfix/smtpd[63406]: warning: connect #3 to subsystem private/rewrite: Connection refused
Mar 31 20:09:28 webmail postfix/smtpd[63470]: warning: connect #3 to subsystem private/rewrite: Connection refused
Mar 31 20:09:29 webmail postfix/smtpd[47911]: warning: connect #5 to subsystem private/rewrite: Connection refused
Mar 31 20:09:30 webmail postfix/smtpd[22734]: warning: connect #8 to subsystem private/rewrite: Connection refused
Mar 31 20:09:31 webmail postfix/smtpd[79376]: warning: connect #1 to subsystem private/rewrite: Connection refused
Mar 31 20:09:31 webmail postfix/smtpd[56940]: warning: connect #4 to subsystem private/rewrite: Connection refused
Mar 31 20:09:31 webmail postfix/smtpd[40693]: warning: connect #6 to subsystem private/rewrite: Connection refused
Mar 31 20:09:32 webmail postfix/smtpd[23636]: warning: connect #8 to subsystem private/rewrite: Connection refused
Mar 31 20:09:33 webmail postfix/smtpd[58607]: warning: connect #4 to subsystem private/rewrite: Connection refused
Mar 31 20:09:33 webmail postfix/smtpd[68039]: warning: connect #3 to subsystem private/rewrite: Connection refused
Mar 31 20:09:35 webmail postfix/smtpd[35684]: warning: connect #7 to subsystem private/rewrite: Connection refused
Mar 31 20:09:37 webmail postfix/smtpd[37783]: warning: connect #7 to subsystem private/rewrite: Connection refused
Mar 31 20:09:37 webmail postfix/smtpd[63406]: warning: connect #4 to subsystem private/rewrite: Connection refused
Mar 31 20:09:38 webmail postfix/smtpd[63470]: warning: connect #4 to subsystem private/rewrite: Connection refused
Mar 31 20:09:38 webmail postfix/cleanup[97093]: warning: end of input while receiving integer data from service unknown_stream
Mar 31 20:09:38 webmail postfix/smtpd[97007]: warning: end of input while receiving string data from service private/rewrite
Mar 31 20:09:38 webmail postfix/smtpd[97007]: warning: rewrite_clnt: bad read: Operation timed out
Mar 31 20:09:39 webmail postfix/smtpd[47911]: warning: connect #6 to subsystem private/rewrite: Connection refused
Mar 31 20:09:40 webmail postfix/smtpd[22734]: warning: connect #9 to subsystem private/rewrite: Connection refused
Mar 31 20:09:41 webmail postfix/smtpd[79376]: warning: connect #2 to subsystem private/rewrite: Connection refused
Mar 31 20:09:41 webmail postfix/smtpd[56940]: warning: connect #5 to subsystem private/rewrite: Connection refused
Mar 31 20:09:41 webmail postfix/smtpd[40693]: warning: connect #7 to subsystem private/rewrite: Connection refused
Mar 31 20:09:42 webmail postfix/smtpd[23636]: warning: connect #9 to subsystem private/rewrite: Connection refused
Mar 31 20:09:43 webmail postfix/smtpd[58607]: warning: connect #5 to subsystem private/rewrite: Connection refused
Mar 31 20:09:43 webmail postfix/cleanup[1767]: warning: end of input while receiving integer data from service unknown_stream
Mar 31 20:09:43 webmail postfix/smtpd[1720]: warning: end of input while receiving string data from service private/rewrite
Mar 31 20:09:43 webmail postfix/smtpd[1720]: warning: rewrite_clnt: bad read: Operation timed out
Mar 31 20:09:44 webmail postfix/smtpd[68039]: warning: connect #4 to subsystem private/rewrite: Connection refused
Mar 31 20:09:45 webmail postfix/smtpd[35684]: warning: connect #8 to subsystem private/rewrite: Connection refused
Mar 31 20:09:47 webmail postfix/cleanup[4486]: warning: end of input while receiving integer data from service unknown_stream
Mar 31 20:09:47 webmail postfix/smtpd[4479]: warning: end of input while receiving string data from service private/rewrite
Mar 31 20:09:47 webmail postfix/smtpd[4479]: warning: rewrite_clnt: bad read: Operation timed out
Mar 31 20:09:47 webmail postfix/smtpd[37783]: warning: connect #8 to subsystem private/rewrite: Connection refused
Mar 31 20:09:47 webmail postfix/smtpd[63406]: warning: connect #5 to subsystem private/rewrite: Connection refused
Mar 31 20:09:48 webmail postfix/cleanup[5419]: warning: end of input while receiving integer data from service unknown_stream
Mar 31 20:09:48 webmail postfix/smtpd[5416]: warning: end of input while receiving string data from service private/rewrite
Mar 31 20:09:48 webmail postfix/smtpd[5416]: warning: rewrite_clnt: bad read: Operation timed out
Mar 31 20:09:48 webmail postfix/cleanup[5482]: warning: end of input while receiving integer data from service unknown_stream
Mar 31 20:09:48 webmail postfix/smtpd[5445]: warning: end of input while receiving string data from service private/rewrite
Mar 31 20:09:48 webmail postfix/smtpd[5445]: warning: rewrite_clnt: bad read: Operation timed out
Mar 31 20:09:48 webmail postfix/smtpd[63470]: warning: connect #5 to subsystem private/rewrite: Connection refused
Mar 31 20:09:48 webmail postfix/smtpd[97007]: warning: connect #1 to subsystem private/rewrite: Connection refused
Mar 31 20:09:49 webmail postfix/smtpd[47911]: warning: connect #7 to subsystem private/rewrite: Connection refused
Mar 31 20:09:50 webmail postfix/smtpd[22734]: warning: connect #10 to subsystem private/rewrite: Connection refused
Mar 31 20:09:51 webmail postfix/smtpd[79376]: warning: connect #3 to subsystem private/rewrite: Connection refused
Mar 31 20:09:51 webmail postfix/smtpd[56940]: warning: connect #6 to subsystem private/rewrite: Connection refused
Mar 31 20:09:51 webmail postfix/smtpd[40693]: warning: connect #8 to subsystem private/rewrite: Connection refused
Mar 31 20:09:51 webmail postfix/cleanup[8359]: warning: end of input while receiving integer data from service unknown_stream
Mar 31 20:09:51 webmail postfix/smtpd[8318]: warning: end of input while receiving string data from service private/rewrite
Mar 31 20:09:51 webmail postfix/smtpd[8318]: warning: rewrite_clnt: bad read: Operation timed out
Mar 31 20:09:52 webmail postfix/smtpd[23636]: warning: connect #10 to subsystem private/rewrite: Connection refused
Mar 31 20:09:52 webmail postfix/cleanup[9466]: warning: end of input while receiving integer data from service unknown_stream
Mar 31 20:09:52 webmail postfix/smtpd[9465]: warning: end of input while receiving string data from service private/rewrite
Mar 31 20:09:52 webmail postfix/smtpd[9465]: warning: rewrite_clnt: bad read: Operation timed out
Mar 31 20:09:52 webmail postfix/cleanup[9572]: warning: end of input while receiving integer data from service unknown_stream
Mar 31 20:09:52 webmail postfix/smtpd[9507]: warning: end of input while receiving string data from service private/rewrite
Mar 31 20:09:52 webmail postfix/smtpd[9507]: warning: rewrite_clnt: bad read: Operation timed out
Mar 31 20:09:53 webmail postfix/smtpd[58607]: warning: connect #6 to subsystem private/rewrite: Connection refused
Mar 31 20:09:53 webmail postfix/smtpd[1720]: warning: connect #1 to subsystem private/rewrite: Connection refused
Mar 31 20:09:54 webmail postfix/smtpd[68039]: warning: connect #5 to subsystem private/rewrite: Connection refused
Mar 31 20:09:55 webmail postfix/smtpd[35684]: warning: connect #9 to subsystem private/rewrite: Connection refused
Mar 31 20:09:57 webmail postfix/smtpd[4479]: warning: connect #1 to subsystem private/rewrite: Connection refused
Mar 31 20:09:57 webmail postfix/smtpd[37783]: warning: connect #9 to subsystem private/rewrite: Connection refused
Mar 31 20:09:57 webmail postfix/smtpd[63406]: warning: connect #6 to subsystem private/rewrite: Connection refused
Mar 31 20:09:58 webmail postfix/smtpd[5416]: warning: connect #1 to subsystem private/rewrite: Connection refused
Mar 31 20:09:58 webmail postfix/smtpd[5445]: warning: connect #1 to subsystem private/rewrite: Connection refused
Mar 31 20:09:58 webmail postfix/smtpd[63470]: warning: connect #6 to subsystem private/rewrite: Connection refused
Mar 31 20:09:58 webmail postfix/smtpd[97007]: warning: connect #2 to subsystem private/rewrite: Connection refused
Mar 31 20:09:59 webmail postfix/smtpd[47911]: warning: connect #8 to subsystem private/rewrite: Connection refused
Mar 31 20:10:00 webmail postfix/smtpd[22734]: fatal: connect #11 to subsystem private/rewrite: Connection refused
Mar 31 20:10:01 webmail postfix/smtpd[79376]: warning: connect #4 to subsystem private/rewrite: Connection refused
Mar 31 20:10:01 webmail postfix/smtpd[56940]: warning: connect #7 to subsystem private/rewrite: Connection refused
Mar 31 20:10:01 webmail postfix/smtpd[40693]: warning: connect #9 to subsystem private/rewrite: Connection refused
Mar 31 20:10:01 webmail postfix/master[32650]: warning: process /usr/libexec/postfix/smtpd pid 22734 exit status 1
Mar 31 20:10:01 webmail postfix/master[32650]: warning: /usr/libexec/postfix/smtpd: bad command startup -- throttling
Mar 31 20:10:01 webmail postfix/smtpd[8318]: warning: connect #1 to subsystem private/rewrite: Connection refused
Mar 31 20:10:02 webmail postfix/smtpd[23636]: fatal: connect #11 to subsystem private/rewrite: Connection refused
Mar 31 20:10:02 webmail postfix/smtpd[9465]: warning: connect #1 to subsystem private/rewrite: Connection refused
Mar 31 20:10:02 webmail postfix/smtpd[9507]: warning: connect #1 to subsystem private/rewrite: Connection refused
Mar 31 20:10:03 webmail postfix/smtpd[58607]: warning: connect #7 to subsystem private/rewrite: Connection refused
Mar 31 20:10:03 webmail postfix/master[32650]: warning: process /usr/libexec/postfix/smtpd pid 23636 exit status 1
Mar 31 20:10:03 webmail postfix/smtpd[1720]: warning: connect #2 to subsystem private/rewrite: Connection refused
Mar 31 20:10:04 webmail postfix/smtpd[68039]: warning: connect #6 to subsystem private/rewrite: Connection refused
Mar 31 20:10:04 webmail postfix/cleanup[23062]: warning: end of input while receiving integer data from service unknown_stream
Mar 31 20:10:04 webmail postfix/smtpd[22993]: warning: end of input while receiving string data from service private/rewrite
Mar 31 20:10:04 webmail postfix/smtpd[22993]: warning: rewrite_clnt: bad read: Operation timed out
Mar 31 20:10:05 webmail postfix/smtpd[35684]: warning: connect #10 to subsystem private/rewrite: Connection refused
Mar 31 20:10:07 webmail postfix/smtpd[4479]: warning: connect #2 to subsystem private/rewrite: Connection refused
Mar 31 20:10:07 webmail postfix/smtpd[37783]: warning: connect #10 to subsystem private/rewrite: Connection refused
Mar 31 20:10:07 webmail postfix/smtpd[63406]: warning: connect #7 to subsystem private/rewrite: Connection refused
Mar 31 20:10:08 webmail postfix/smtpd[5416]: warning: connect #2 to subsystem private/rewrite: Connection refused
Mar 31 20:10:08 webmail postfix/smtpd[5445]: warning: connect #2 to subsystem private/rewrite: Connection refused
Mar 31 20:10:08 webmail postfix/smtpd[63470]: warning: connect #7 to subsystem private/rewrite: Connection refused
Mar 31 20:10:08 webmail postfix/smtpd[97007]: warning: connect #3 to subsystem private/rewrite: Connection refused
Mar 31 20:10:09 webmail postfix/smtpd[47911]: warning: connect #9 to subsystem private/rewrite: Connection refused
Mar 31 20:10:11 webmail postfix/smtpd[79376]: warning: connect #5 to subsystem private/rewrite: Connection refused
Mar 31 20:10:11 webmail postfix/smtpd[56940]: warning: connect #8 to subsystem private/rewrite: Connection refused
Mar 31 20:10:11 webmail postfix/smtpd[40693]: warning: connect #10 to subsystem private/rewrite: Connection refused
Mar 31 20:10:11 webmail postfix/smtpd[8318]: warning: connect #2 to subsystem private/rewrite: Connection refused
Mar 31 20:10:12 webmail postfix/cleanup[29789]: warning: end of input while receiving integer data from service unknown_stream
Mar 31 20:10:12 webmail postfix/smtpd[29779]: warning: end of input while receiving string data from service private/rewrite
Mar 31 20:10:12 webmail postfix/smtpd[29779]: warning: rewrite_clnt: bad read: Operation timed out
Mar 31 20:10:12 webmail postfix/smtpd[9465]: warning: connect #2 to subsystem private/rewrite: Connection refused
Mar 31 20:10:12 webmail postfix/smtpd[9507]: warning: connect #2 to subsystem private/rewrite: Connection refused
Mar 31 20:10:13 webmail postfix/smtpd[58607]: warning: connect #8 to subsystem private/rewrite: Connection refused
Mar 31 20:10:13 webmail postfix/smtpd[1720]: warning: connect #3 to subsystem private/rewrite: Connection refused
Mar 31 20:10:14 webmail postfix/smtpd[68039]: warning: connect #7 to subsystem private/rewrite: Connection refused
Mar 31 20:10:14 webmail postfix/smtpd[22993]: warning: connect #1 to subsystem private/rewrite: Connection refused
Mar 31 20:10:15 webmail postfix/smtpd[35684]: fatal: connect #11 to subsystem private/rewrite: Connection refused
Mar 31 20:10:16 webmail postfix/master[32650]: warning: process /usr/libexec/postfix/smtpd pid 35684 exit status 1
Mar 31 20:10:17 webmail postfix/smtpd[4479]: warning: connect #3 to subsystem private/rewrite: Connection refused
Mar 31 20:10:17 webmail postfix/smtpd[37783]: fatal: connect #11 to subsystem private/rewrite: Connection refused
Mar 31 20:10:17 webmail postfix/smtpd[63406]: warning: connect #8 to subsystem private/rewrite: Connection refused
Mar 31 20:10:18 webmail postfix/smtpd[5416]: warning: connect #3 to subsystem private/rewrite: Connection refused
Mar 31 20:10:18 webmail postfix/smtpd[5445]: warning: connect #3 to subsystem private/rewrite: Connection refused
Mar 31 20:10:18 webmail postfix/smtpd[63470]: warning: connect #8 to subsystem private/rewrite: Connection refused
Mar 31 20:10:18 webmail postfix/smtpd[97007]: warning: connect #4 to subsystem private/rewrite: Connection refused
Mar 31 20:10:18 webmail postfix/master[32650]: warning: process /usr/libexec/postfix/smtpd pid 37783 exit status 1
Mar 31 20:10:19 webmail postfix/smtpd[47911]: warning: connect #10 to subsystem private/rewrite: Connection refused
Mar 31 20:10:21 webmail postfix/smtpd[79376]: warning: connect #6 to subsystem private/rewrite: Connection refused
Mar 31 20:10:21 webmail postfix/smtpd[56940]: warning: connect #9 to subsystem private/rewrite: Connection refused
Mar 31 20:10:21 webmail postfix/smtpd[40693]: fatal: connect #11 to subsystem private/rewrite: Connection refused
Mar 31 20:10:21 webmail postfix/smtpd[8318]: warning: connect #3 to subsystem private/rewrite: Connection refused
Mar 31 20:10:22 webmail postfix/smtpd[29779]: warning: connect #1 to subsystem private/rewrite: Connection refused
Mar 31 20:10:22 webmail postfix/smtpd[9465]: warning: connect #3 to subsystem private/rewrite: Connection refused
Mar 31 20:10:22 webmail postfix/master[32650]: warning: process /usr/libexec/postfix/smtpd pid 40693 exit status 1
Mar 31 20:10:22 webmail postfix/smtpd[9507]: warning: connect #3 to subsystem private/rewrite: Connection refused
Mar 31 20:10:23 webmail postfix/smtpd[58607]: warning: connect #9 to subsystem private/rewrite: Connection refused
Mar 31 20:10:23 webmail postfix/smtpd[1720]: warning: connect #4 to subsystem private/rewrite: Connection refused
Mar 31 20:10:24 webmail postfix/smtpd[68039]: warning: connect #8 to subsystem private/rewrite: Connection refused
Mar 31 20:10:24 webmail postfix/smtpd[22993]: warning: connect #2 to subsystem private/rewrite: Connection refused
Mar 31 20:10:27 webmail postfix/smtpd[4479]: warning: connect #4 to subsystem private/rewrite: Connection refused
Mar 31 20:10:27 webmail postfix/smtpd[63406]: warning: connect #9 to subsystem private/rewrite: Connection refused
Mar 31 20:10:28 webmail postfix/smtpd[5416]: warning: connect #4 to subsystem private/rewrite: Connection refused
Mar 31 20:10:28 webmail postfix/smtpd[5445]: warning: connect #4 to subsystem private/rewrite: Connection refused
Mar 31 20:10:28 webmail postfix/smtpd[63470]: warning: connect #9 to subsystem private/rewrite: Connection refused
Mar 31 20:10:28 webmail postfix/smtpd[97007]: warning: connect #5 to subsystem private/rewrite: Connection refused
Mar 31 20:10:29 webmail postfix/smtpd[47911]: fatal: connect #11 to subsystem private/rewrite: Connection refused
Mar 31 20:10:30 webmail postfix/master[32650]: warning: process /usr/libexec/postfix/smtpd pid 47911 exit status 1
Mar 31 20:10:31 webmail postfix/smtpd[79376]: warning: connect #7 to subsystem private/rewrite: Connection refused
Mar 31 20:10:31 webmail postfix/smtpd[56940]: warning: connect #10 to subsystem private/rewrite: Connection refused
Mar 31 20:10:31 webmail postfix/smtpd[8318]: warning: connect #4 to subsystem private/rewrite: Connection refused
Mar 31 20:10:32 webmail postfix/smtpd[29779]: warning: connect #2 to subsystem private/rewrite: Connection refused
Mar 31 20:10:32 webmail postfix/smtpd[9465]: warning: connect #4 to subsystem private/rewrite: Connection refused
Mar 31 20:10:32 webmail postfix/smtpd[9507]: warning: connect #4 to subsystem private/rewrite: Connection refused
Mar 31 20:10:33 webmail postfix/smtpd[58607]: warning: connect #10 to subsystem private/rewrite: Connection refused
Mar 31 20:10:33 webmail postfix/smtpd[1720]: warning: connect #5 to subsystem private/rewrite: Connection refused
Mar 31 20:10:34 webmail postfix/smtpd[68039]: warning: connect #9 to subsystem private/rewrite: Connection refused
Mar 31 20:10:34 webmail postfix/smtpd[22993]: warning: connect #3 to subsystem private/rewrite: Connection refused
Mar 31 20:10:37 webmail postfix/smtpd[4479]: warning: connect #5 to subsystem private/rewrite: Connection refused
Mar 31 20:10:37 webmail postfix/smtpd[63406]: warning: connect #10 to subsystem private/rewrite: Connection refused
Mar 31 20:10:38 webmail postfix/smtpd[5416]: warning: connect #5 to subsystem private/rewrite: Connection refused
Mar 31 20:10:38 webmail postfix/smtpd[5445]: warning: connect #5 to subsystem private/rewrite: Connection refused
Mar 31 20:10:38 webmail postfix/smtpd[63470]: warning: connect #10 to subsystem private/rewrite: Connection refused
Mar 31 20:10:38 webmail postfix/smtpd[97007]: warning: connect #6 to subsystem private/rewrite: Connection refused
Mar 31 20:10:40 webmail postfix/cleanup[54110]: warning: end of input while receiving integer data from service unknown_stream
Mar 31 20:10:40 webmail postfix/smtpd[54101]: warning: end of input while receiving string data from service private/rewrite
Mar 31 20:10:40 webmail postfix/smtpd[54101]: warning: rewrite_clnt: bad read: Operation timed out

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abhaigh
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DABF6C49D6: [List: unknown] reject: CONNECT from mail115.messagelabs.com[195.245.231.179]: 450: too many open connections; from=<unknown> to=<unknown>

this looks like it might be an indicator of the problem - yes, you might be suffering from some sort of DDOS attack. IT looks like something is trying to open far too many connections to your firewall which is causing it to refuse any further connections. Italso would explain why the problem goes away after you reboot the firewall (by doing so you kill any and all open connections to it and allow it to start responding properly again)

I would examine the firewall logs to see if you can't determine where the connections are coming from (rnuning Netstat -a on that machine might help the investigation as well)
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tech2010

ASKER

yes i think you are right it look like some kind of attack. I am just worrying could it be from my internal LAN.

Do you know any tool e.g TrafficMax or LanExplorer to scan the network?

thanks
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abhaigh
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Off the top of my head? no

But running netstat -a on the effected machine will show you all the connections to it - a simple examination of the ip addresses the connections are coming from should let you know if the source is internal or external
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HeshamMousa
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try to empty your mail queue before rebooting ur mail firewall and disable the postmaster from sending NDR just for testing
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tech2010

ASKER

I can't run netstat on my Mail Firewall as it was graphic interface and does not allow netstat in the diagnistic screen. So I am trying to look for a tool to explore my LAN to find if any machine is broadcasting or generating lots of traffic to my Mail firewall.
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abhaigh
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You'll need to run a packet sniffer in promiscious mode

wireshark is a good one
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tech2010

ASKER

are they freeware or atleast work in their trial period?
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abhaigh
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wireshark is freeware
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tech2010

ASKER

but when i run this on my machine it picks up many things how can i be specific to trace just the traffic hitting to my mail firewall? thanks
ASKER CERTIFIED SOLUTION
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abhaigh
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tech2010

ASKER

there were lots of broadcast traffic from my internal network, also the catalyst where it physically the interface was connected is flooding, after changing to different switch, problem solved. thanks