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SMTP Service Not Accepting Inbound Connections

We have a SBS 2003 server which has all updates for Server and Exchange installed. They can send email out fine, but when we try to setup a SMTP feed for thier emails the emails stop working. On the router port 25 is forwarded.

Telnet to either thier public IP or localhost on port 25 conencts but then disconnects straight away and just says Press any key to continue. No exchange banner as expected.

ASKER CERTIFIED SOLUTION

abhaigh

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synergiq

ASKER

The SMTP virtual server looks identical to a SBS server that is working.

abhaigh

but it isn't behaving like one that is working - that's your problem

synergiq

ASKER

So any advice on how to fix it then? Or troubleshooting steps, because at the moment log files etc are not pointing to a cause.

abhaigh

You might have something else bound to that port - try this

¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬
From the command line:
netstat -an >c:\ports.txt
notepad c:\ports.txt

Look for TCP 25 and see what's listenning on the port.

If a PID is given then from the command line:
tasklist /svc
Associate the PID with the service and work on getting rid of it or reconfiguring it.

[lifted from https://www.experts-exchange.com/questions/24233704/SBS-2003-Smtp-port.html]
¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬

also read this for more information

How to troubleshoot for Exchange Server 2003 transport issues
http://support.microsoft.com/kb/821910

as will

synergiq

ASKER

There is only inetinfo.exe listening on localhost:smtp. I had already checked this, also logging has already been enabled on the SMTP service and this is what it gives me

SMTPSVC1 EMI-1JH3F25F22K - 25 0
SMTPSVC1 EMI-1JH3F25F22K - 25 0
SMTPSVC1 EMI-1JH3F25F22K - 25 0
SMTPSVC1 EMI-1JH3F25F22K - 25 0
SMTPSVC1 EMI-1JH3F25F22K - 25 0
SMTPSVC1 EMI-1JH3F25F22K - 25 0
SMTPSVC1 EMI-1JH3F25F22K - 25 0
SMTPSVC1 EMI-1JH3F25F22K - 25 0
SMTPSVC1 EMI-1JH3F25F22K - 25 0
SMTPSVC1 EMI-1JH3F25F22K - 25 0
SMTPSVC1 EMI-1JH3F25F22K - 25 0
SMTPSVC1 EMI-1JH3F25F22K - 25 0
SMTPSVC1 EMI-1JH3F25F22K 192.168.16.2 0 250
SMTPSVC1 EMI-1JH3F25F22K 192.168.16.2 0 250
SMTPSVC1 EMI-1JH3F25F22K 192.168.16.2 0 250
SMTPSVC1 EMI-1JH3F25F22K 192.168.16.2 0 250
SMTPSVC1 EMI-1JH3F25F22K 192.168.16.2 0 240

abhaigh

is that the dump from netstat -an? I run that on one of my exchange boxes and I get the name of the exchange server itself - not the iis smtp service

also check what port your smtp virtual machine is listening on in exchange

1. Start the Exchange System Manager.
2. Locate and click Servername, click Protocols, and then click SMTP.
3. Right-click the Default SMTP Virtual Server object, and then click Properties.
4. On the General tab, click the Advanced button, check that the virtual machine is actually listening on port 25

synergiq

ASKER

Default server is listening on TCP 25. Here is the result from a netstat -an -p tcp

Active Connections

Proto Local Address Foreign Address State
TCP 0.0.0.0:25 0.0.0.0:0 LISTENING
TCP 0.0.0.0:42 0.0.0.0:0 LISTENING
TCP 0.0.0.0:80 0.0.0.0:0 LISTENING
TCP 0.0.0.0:88 0.0.0.0:0 LISTENING
TCP 0.0.0.0:135 0.0.0.0:0 LISTENING
TCP 0.0.0.0:389 0.0.0.0:0 LISTENING
TCP 0.0.0.0:443 0.0.0.0:0 LISTENING
TCP 0.0.0.0:444 0.0.0.0:0 LISTENING
TCP 0.0.0.0:445 0.0.0.0:0 LISTENING
TCP 0.0.0.0:464 0.0.0.0:0 LISTENING
TCP 0.0.0.0:593 0.0.0.0:0 LISTENING
TCP 0.0.0.0:636 0.0.0.0:0 LISTENING
TCP 0.0.0.0:691 0.0.0.0:0 LISTENING
TCP 0.0.0.0:1026 0.0.0.0:0 LISTENING
TCP 0.0.0.0:1027 0.0.0.0:0 LISTENING
TCP 0.0.0.0:1053 0.0.0.0:0 LISTENING
TCP 0.0.0.0:1077 0.0.0.0:0 LISTENING
TCP 0.0.0.0:1150 0.0.0.0:0 LISTENING
TCP 0.0.0.0:1186 0.0.0.0:0 LISTENING
TCP 0.0.0.0:1723 0.0.0.0:0 LISTENING
TCP 0.0.0.0:1936 0.0.0.0:0 LISTENING
TCP 0.0.0.0:1937 0.0.0.0:0 LISTENING
TCP 0.0.0.0:1938 0.0.0.0:0 LISTENING
TCP 0.0.0.0:1939 0.0.0.0:0 LISTENING
TCP 0.0.0.0:1942 0.0.0.0:0 LISTENING
TCP 0.0.0.0:2062 0.0.0.0:0 LISTENING
TCP 0.0.0.0:2105 0.0.0.0:0 LISTENING
TCP 0.0.0.0:2715 0.0.0.0:0 LISTENING
TCP 0.0.0.0:3268 0.0.0.0:0 LISTENING
TCP 0.0.0.0:3269 0.0.0.0:0 LISTENING
TCP 0.0.0.0:3389 0.0.0.0:0 LISTENING
TCP 0.0.0.0:6001 0.0.0.0:0 LISTENING
TCP 0.0.0.0:6002 0.0.0.0:0 LISTENING
TCP 0.0.0.0:6004 0.0.0.0:0 LISTENING
TCP 0.0.0.0:6101 0.0.0.0:0 LISTENING
TCP 0.0.0.0:6106 0.0.0.0:0 LISTENING
TCP 0.0.0.0:6152 0.0.0.0:0 LISTENING
TCP 0.0.0.0:8081 0.0.0.0:0 LISTENING
TCP 0.0.0.0:10000 0.0.0.0:0 LISTENING
TCP 0.0.0.0:41709 0.0.0.0:0 LISTENING
TCP 0.0.0.0:57670 0.0.0.0:0 LISTENING
TCP 10.0.0.10:3389 81.149.119.64:1094 ESTABLISHED
TCP 10.0.0.10:3389 81.149.119.64:49881 ESTABLISHED
TCP 10.0.0.10:42197 213.171.216.65:110 ESTABLISHED
TCP 127.0.0.1:53 0.0.0.0:0 LISTENING
TCP 127.0.0.1:389 127.0.0.1:42163 ESTABLISHED
TCP 127.0.0.1:2067 127.0.0.1:389 CLOSE_WAIT
TCP 127.0.0.1:2096 127.0.0.1:389 CLOSE_WAIT
TCP 127.0.0.1:2167 127.0.0.1:389 CLOSE_WAIT
TCP 127.0.0.1:2304 127.0.0.1:2715 ESTABLISHED
TCP 127.0.0.1:2715 127.0.0.1:2304 ESTABLISHED
TCP 127.0.0.1:2715 127.0.0.1:20874 ESTABLISHED
TCP 127.0.0.1:20707 127.0.0.1:389 CLOSE_WAIT
TCP 127.0.0.1:20874 127.0.0.1:2715 ESTABLISHED
TCP 127.0.0.1:30357 127.0.0.1:389 CLOSE_WAIT
TCP 127.0.0.1:39684 127.0.0.1:25 CLOSE_WAIT
TCP 127.0.0.1:42163 127.0.0.1:389 ESTABLISHED
TCP 127.0.0.1:42208 127.0.0.1:8192 SYN_SENT
TCP 192.168.16.2:53 0.0.0.0:0 LISTENING
TCP 192.168.16.2:135 192.168.16.2:42184 ESTABLISHED
TCP 192.168.16.2:139 0.0.0.0:0 LISTENING
TCP 192.168.16.2:389 192.168.16.2:42087 ESTABLISHED
TCP 192.168.16.2:389 192.168.16.2:42089 ESTABLISHED
TCP 192.168.16.2:389 192.168.16.2:42111 ESTABLISHED
TCP 192.168.16.2:389 192.168.16.2:42112 ESTABLISHED
TCP 192.168.16.2:389 192.168.16.2:42113 ESTABLISHED
TCP 192.168.16.2:389 192.168.16.2:42114 ESTABLISHED
TCP 192.168.16.2:389 192.168.16.2:42115 ESTABLISHED
TCP 192.168.16.2:389 192.168.16.2:42116 ESTABLISHED
TCP 192.168.16.2:389 192.168.16.2:42117 ESTABLISHED
TCP 192.168.16.2:389 192.168.16.2:42118 ESTABLISHED
TCP 192.168.16.2:389 192.168.16.2:42119 ESTABLISHED
TCP 192.168.16.2:389 192.168.16.2:42120 ESTABLISHED
TCP 192.168.16.2:389 192.168.16.2:42121 ESTABLISHED
TCP 192.168.16.2:389 192.168.16.2:42123 ESTABLISHED
TCP 192.168.16.2:389 192.168.16.2:42124 ESTABLISHED
TCP 192.168.16.2:389 192.168.16.2:42127 ESTABLISHED
TCP 192.168.16.2:389 192.168.16.2:42128 ESTABLISHED
TCP 192.168.16.2:389 192.168.16.2:42130 ESTABLISHED
TCP 192.168.16.2:389 192.168.16.2:42134 ESTABLISHED
TCP 192.168.16.2:389 192.168.16.2:42135 ESTABLISHED
TCP 192.168.16.2:389 192.168.16.2:42136 ESTABLISHED
TCP 192.168.16.2:389 192.168.16.2:42145 ESTABLISHED
TCP 192.168.16.2:389 192.168.16.2:42151 ESTABLISHED
TCP 192.168.16.2:389 192.168.16.2:42183 ESTABLISHED
TCP 192.168.16.2:389 192.168.16.2:42186 TIME_WAIT
TCP 192.168.16.2:389 192.168.16.2:42187 TIME_WAIT
TCP 192.168.16.2:389 192.168.16.2:42191 TIME_WAIT
TCP 192.168.16.2:389 192.168.16.2:42192 TIME_WAIT
TCP 192.168.16.2:389 192.168.16.2:42194 TIME_WAIT
TCP 192.168.16.2:389 192.168.16.2:42195 TIME_WAIT
TCP 192.168.16.2:389 192.168.16.2:42205 TIME_WAIT
TCP 192.168.16.2:389 192.168.16.2:42206 ESTABLISHED
TCP 192.168.16.2:445 192.168.16.19:1365 ESTABLISHED
TCP 192.168.16.2:445 192.168.16.25:1081 ESTABLISHED
TCP 192.168.16.2:445 192.168.16.27:1704 ESTABLISHED
TCP 192.168.16.2:445 192.168.16.32:1039 ESTABLISHED
TCP 192.168.16.2:445 192.168.16.32:1211 ESTABLISHED
TCP 192.168.16.2:691 192.168.16.2:20721 ESTABLISHED
TCP 192.168.16.2:691 192.168.16.2:20722 ESTABLISHED
TCP 192.168.16.2:691 192.168.16.2:39784 ESTABLISHED
TCP 192.168.16.2:1026 192.168.16.2:1090 ESTABLISHED
TCP 192.168.16.2:1026 192.168.16.2:1391 ESTABLISHED
TCP 192.168.16.2:1026 192.168.16.2:2137 ESTABLISHED
TCP 192.168.16.2:1026 192.168.16.2:9343 ESTABLISHED
TCP 192.168.16.2:1026 192.168.16.2:42190 ESTABLISHED
TCP 192.168.16.2:1026 192.168.16.19:1074 ESTABLISHED
TCP 192.168.16.2:1026 192.168.16.25:1127 ESTABLISHED
TCP 192.168.16.2:1026 192.168.16.27:1706 ESTABLISHED
TCP 192.168.16.2:1026 192.168.16.32:1196 ESTABLISHED
TCP 192.168.16.2:1090 192.168.16.2:1026 ESTABLISHED
TCP 192.168.16.2:1145 192.168.16.2:389 CLOSE_WAIT
TCP 192.168.16.2:1391 192.168.16.2:1026 ESTABLISHED
TCP 192.168.16.2:2068 192.168.16.2:389 CLOSE_WAIT
TCP 192.168.16.2:2085 192.168.16.2:389 CLOSE_WAIT
TCP 192.168.16.2:2105 192.168.16.19:1077 ESTABLISHED
TCP 192.168.16.2:2105 192.168.16.25:1786 ESTABLISHED
TCP 192.168.16.2:2105 192.168.16.27:2440 ESTABLISHED
TCP 192.168.16.2:2105 192.168.16.32:1203 ESTABLISHED
TCP 192.168.16.2:2137 192.168.16.2:1026 ESTABLISHED
TCP 192.168.16.2:2328 192.168.16.2:389 CLOSE_WAIT
TCP 192.168.16.2:3268 192.168.16.2:42110 ESTABLISHED
TCP 192.168.16.2:3268 192.168.16.2:42125 ESTABLISHED
TCP 192.168.16.2:3268 192.168.16.2:42131 ESTABLISHED
TCP 192.168.16.2:3268 192.168.16.2:42207 ESTABLISHED
TCP 192.168.16.2:7669 192.168.16.2:389 CLOSE_WAIT
TCP 192.168.16.2:7676 192.168.16.2:3268 CLOSE_WAIT
TCP 192.168.16.2:8789 192.168.16.2:389 CLOSE_WAIT
TCP 192.168.16.2:8790 192.168.16.2:3268 CLOSE_WAIT
TCP 192.168.16.2:9343 192.168.16.2:1026 ESTABLISHED
TCP 192.168.16.2:20578 192.168.16.2:389 CLOSE_WAIT
TCP 192.168.16.2:20721 192.168.16.2:691 ESTABLISHED
TCP 192.168.16.2:20722 192.168.16.2:691 ESTABLISHED
TCP 192.168.16.2:30360 192.168.16.2:389 CLOSE_WAIT
TCP 192.168.16.2:39298 192.168.16.2:389 CLOSE_WAIT
TCP 192.168.16.2:39784 192.168.16.2:691 ESTABLISHED
TCP 192.168.16.2:39813 192.168.16.2:389 CLOSE_WAIT
TCP 192.168.16.2:39845 192.168.16.2:389 CLOSE_WAIT
TCP 192.168.16.2:40822 192.168.16.2:3268 CLOSE_WAIT
TCP 192.168.16.2:41253 192.168.16.2:389 CLOSE_WAIT
TCP 192.168.16.2:41265 192.168.16.2:3268 CLOSE_WAIT
TCP 192.168.16.2:41266 192.168.16.2:389 CLOSE_WAIT
TCP 192.168.16.2:42087 192.168.16.2:389 ESTABLISHED
TCP 192.168.16.2:42089 192.168.16.2:389 ESTABLISHED
TCP 192.168.16.2:42110 192.168.16.2:3268 ESTABLISHED
TCP 192.168.16.2:42111 192.168.16.2:389 ESTABLISHED
TCP 192.168.16.2:42112 192.168.16.2:389 ESTABLISHED
TCP 192.168.16.2:42113 192.168.16.2:389 ESTABLISHED
TCP 192.168.16.2:42114 192.168.16.2:389 ESTABLISHED
TCP 192.168.16.2:42115 192.168.16.2:389 ESTABLISHED
TCP 192.168.16.2:42116 192.168.16.2:389 ESTABLISHED
TCP 192.168.16.2:42117 192.168.16.2:389 ESTABLISHED
TCP 192.168.16.2:42118 192.168.16.2:389 ESTABLISHED
TCP 192.168.16.2:42119 192.168.16.2:389 ESTABLISHED
TCP 192.168.16.2:42120 192.168.16.2:389 ESTABLISHED
TCP 192.168.16.2:42121 192.168.16.2:389 ESTABLISHED
TCP 192.168.16.2:42123 192.168.16.2:389 ESTABLISHED
TCP 192.168.16.2:42124 192.168.16.2:389 ESTABLISHED
TCP 192.168.16.2:42125 192.168.16.2:3268 ESTABLISHED
TCP 192.168.16.2:42127 192.168.16.2:389 ESTABLISHED
TCP 192.168.16.2:42128 192.168.16.2:389 ESTABLISHED
TCP 192.168.16.2:42130 192.168.16.2:389 ESTABLISHED
TCP 192.168.16.2:42131 192.168.16.2:3268 ESTABLISHED
TCP 192.168.16.2:42134 192.168.16.2:389 ESTABLISHED
TCP 192.168.16.2:42135 192.168.16.2:389 ESTABLISHED
TCP 192.168.16.2:42136 192.168.16.2:389 ESTABLISHED
TCP 192.168.16.2:42145 192.168.16.2:389 ESTABLISHED
TCP 192.168.16.2:42151 192.168.16.2:389 ESTABLISHED
TCP 192.168.16.2:42183 192.168.16.2:389 ESTABLISHED
TCP 192.168.16.2:42184 192.168.16.2:135 ESTABLISHED
TCP 192.168.16.2:42189 192.168.16.2:135 TIME_WAIT
TCP 192.168.16.2:42190 192.168.16.2:1026 ESTABLISHED
TCP 192.168.16.2:42193 192.168.16.2:445 TIME_WAIT
TCP 192.168.16.2:42206 192.168.16.2:389 ESTABLISHED
TCP 192.168.16.2:42207 192.168.16.2:3268 ESTABLISHED
TCP 192.168.16.2:56481 192.168.16.2:389 CLOSE_WAIT
TCP 192.168.16.2:58823 192.168.16.2:389 CLOSE_WAIT
TCP 192.168.16.2:58824 192.168.16.2:3268 CLOSE_WAIT

synergiq

ASKER

Double checked the SMTP Virtual Server settings and there was a error.

vrjohn53

I have run the Fix my network wizard and it is reporting everything as ok.
Can you offer some advice on rectifying this issue?