Email server (postfix) can't send mail

**wcchandler** · 09-30-2006

Running SuSE 10.1 with postfix... Can't send mail to anyone, always get connection timed out. My router is setup for a virtual server through port 25.. happens to gmail too

Code:

Sep 30 12:32:28 server postfix/smtp[16146]: connect to mx3.hotmail.com[64.4.50.179]: Connection timed out (port 25)
Sep 30 12:32:58 server postfix/smtp[16146]: connect to mx3.hotmail.com[65.54.245.72]: Connection timed out (port 25)
Sep 30 12:33:28 server postfix/smtp[16146]: connect to mx1.hotmail.com[65.54.244.8]: Connection timed out (port 25)
Sep 30 12:33:58 server postfix/smtp[16146]: connect to mx4.hotmail.com[65.54.244.104]: Connection timed out (port 25)
Sep 30 12:34:28 server postfix/smtp[16146]: connect to mx1.hotmail.com[65.54.244.136]: Connection timed out (port 25)
Sep 30 12:34:58 server postfix/smtp[16146]: connect to mx4.hotmail.com[65.54.245.104]: Connection timed out (port 25)
Sep 30 12:35:28 server postfix/smtp[16146]: connect to mx2.hotmail.com[65.54.245.40]: Connection timed out (port 25)
Sep 30 12:35:58 server postfix/smtp[16146]: connect to mx2.hotmail.com[65.54.190.50]: Connection timed out (port 25)
Sep 30 12:36:28 server postfix/smtp[16146]: connect to mx4.hotmail.com[65.54.244.232]: Connection timed out (port 25)
Sep 30 12:36:58 server postfix/smtp[16146]: connect to mx1.hotmail.com[65.54.245.8]: Connection timed out (port 25)
Sep 30 12:37:28 server postfix/smtp[16146]: connect to mx4.hotmail.com[65.54.190.179]: Connection timed out (port 25)
Sep 30 12:37:58 server postfix/smtp[16146]: connect to mx3.hotmail.com[65.54.244.72]: Connection timed out (port 25)
Sep 30 12:37:59 server postfix/smtp[16146]: 6A343285E2: to=<user@hotmail.com>, relay=none, delay=101826, status=deferred (connect to mx3.hotmail.com[65.54.244.72]: Connection timed out)

**wcchandler** · 10-01-2006

Tried to telnet 25 to the server from behind the router couldn't connect. I could connect to it locally however.

Code:

C:\Documents and Settings\username>telnet 192.168.0.115 25
Connecting To 192.168.0.115...Could not open connection to the host, on port 25:
 Connect failed

Code:

# telnet localhost 25
Trying 127.0.0.1...
Connected to localhost.
Escape character is '^]'.
220 server.slccr.org ESMTP Postfix
^]
telnet>

so the problem must be postfix, no?

**cburwell** · 10-01-2006

Are you running any sort of firewall on the server (never mind the firewall on your router)? If so you may have to tell the firewall to allow connections through port 25 (in and out maybe).

Could you also explain your problem a bit more? In the first log file you posted, that is a log from when you tryed to send a message locally to a hoymail user? And this also happens when you try to send mail to gmail users? What about other domains?

**wcchandler** · 10-01-2006

I have the firewall turned off. I can't send out any mail or recieve any mail. I've tried sending to hotmail, gmail, mckendree.edu, and htc.net. I think the problem has to deal with my server though and its not accepting any connections on port 25 e.g. telnet

**gtmtnbiker98** · 10-02-2006

Is the server only being refused by Hotmail.com? If so, this may be the result of Microsoft's reverse lookup on your mail domain. Is your domain properly registerd and are you sure that it isn't blacklisted. The reason is, this could be the cause of your server failing to send.

**cburwell** · 10-02-2006

I never thought of that. I wonder what could be blocking access to his mail server on his local network?

**skoirala** · 10-07-2007

Actually, it's a quick, easy fix. Call me and I will walk you through the steps.

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