Exchange 2007 on SBS 2008 - Cannot receive mail from outside
We have Exchange 2007 installed on Windows Server 2008 SBS. Everything was running fine until about 5 day's ago.
- We can access OWA from inside and outside the building fine
- We can send/receive E-mails from inside the local network
- We can send E-mails to outside E-mail addresses
- We cannot receive E-mails from outside the building
- We can telnet port 25 and 443 from outside the building
Also, it started working again yesterday about 10:30 AM then noticed it wasn't working at about 7:45 AM this morning. Any suggestions? We think it may have something to do with windows updates.
- We can access OWA from inside and outside the building fine
- We can send/receive E-mails from inside the local network
- We can send E-mails to outside E-mail addresses
- We cannot receive E-mails from outside the building
- We can telnet port 25 and 443 from outside the building
Also, it started working again yesterday about 10:30 AM then noticed it wasn't working at about 7:45 AM this morning. Any suggestions? We think it may have something to do with windows updates.
ASKER
Getting a lot of Windows SharePoint Services 3 Search errors in event log. I will try to send E-mail through telnet and post result.
ASKER
Every time I try the MAIL FROM: command I get Insufficient system resources or invalid address response.
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ASKER
Ran this through E-mail test online and here are the results:
Pasting often results in a syntax error.
This is evidenced by an @ (and nothing else ) in the transaction record.
The test process should not cause any problems to the mail host.
If this proves not to be the case, please leave a comment to the sysop.
There is a 10 use per day limit on the email address tester.
You have used this utility 0 times today.
The query string is O.K.
support@eghc.org passes the syntax check. TLD is valid.
The domain is eghc.org
The mail host for eghc.org is mail.eghc.org.
Looking up IP address for mail.eghc.org.
The IP address for mail.eghc.org. is 12.158.100.197
12.158.100.197 is not black listed.
creating socket.....OK.
Attempting to connect to '12.158.100.197' on port '25'...
Connected
response: 220 EGHC-SRV-1-06.eghc.interna
sending: HELO
response: 250 EGHC-SRV-1-06.eghc.interna
sending: MAIL FROM tester@69.59.103.127
response: 501 5.1.7 Invalid address
Your server may not configured to accept "domain literals".
Refusal of "domain literals" like tester@69.59.103.127 is a violation of RFC-822 Section 6.2.3
sending: MAIL FROM: postmaster@mail.eghc.org
response: 250 2.1.0 Sender OK
sending: RCPT TO support@eghc.org
response: 250 2.1.5 Recipient OK
sending: QUIT
Closing socket...socket closed
Need help with the server return-codes? Click here.
This page last modified: August 08 2010
Pasting often results in a syntax error.
This is evidenced by an @ (and nothing else ) in the transaction record.
The test process should not cause any problems to the mail host.
If this proves not to be the case, please leave a comment to the sysop.
There is a 10 use per day limit on the email address tester.
You have used this utility 0 times today.
The query string is O.K.
support@eghc.org passes the syntax check. TLD is valid.
The domain is eghc.org
The mail host for eghc.org is mail.eghc.org.
Looking up IP address for mail.eghc.org.
The IP address for mail.eghc.org. is 12.158.100.197
12.158.100.197 is not black listed.
creating socket.....OK.
Attempting to connect to '12.158.100.197' on port '25'...
Connected
response: 220 EGHC-SRV-1-06.eghc.interna
sending: HELO
response: 250 EGHC-SRV-1-06.eghc.interna
sending: MAIL FROM tester@69.59.103.127
response: 501 5.1.7 Invalid address
Your server may not configured to accept "domain literals".
Refusal of "domain literals" like tester@69.59.103.127 is a violation of RFC-822 Section 6.2.3
sending: MAIL FROM: postmaster@mail.eghc.org
response: 250 2.1.0 Sender OK
sending: RCPT TO support@eghc.org
response: 250 2.1.5 Recipient OK
sending: QUIT
Closing socket...socket closed
Need help with the server return-codes? Click here.
This page last modified: August 08 2010
This looks even more like a backpressure problem now, that's why it works sometimes. Please read the article I posted, and search for MSExchangeTransport events, it should give you a clue.
Backpressure is a feature that prevents Exchange from getting overloaded by rejecting new e-mails when certain conditions have been reached, such as low disk space, low memory, etc. The trick is to identify the problem and either fix it or to adjust the backpressure parameters.
Backpressure is a feature that prevents Exchange from getting overloaded by rejecting new e-mails when certain conditions have been reached, such as low disk space, low memory, etc. The trick is to identify the problem and either fix it or to adjust the backpressure parameters.
ASKER
Getting bounce backs with this error now:
Delivery is delayed to these recipients or groups
Delivery is delayed to these recipients or groups
Any input on the backpressure? Did you find corresponding events?
The delay notifications may be generated by the sending servers since they will queue the mails and keep trying.
The delay notifications may be generated by the sending servers since they will queue the mails and keep trying.
ASKER
I do not see any backpressure related errors in the event logs. I am still looking into the rest.
ASKER
Deleted logs to free up space on C: drive and now everything is flowing good. Thanks.
Try sending a test mail using telnet (from the outside). If you don't know how to do that, those instructions should help:
http://support.microsoft.com/kb/153119
What is the result?