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Date: Thu, 21 Jul 2011 10:31:06 +0200
From: Bernt Hansson <bah@bananmonarki.se>
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To: ssgriffonuser <ssgriffonuser@gmail.com>
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Cc: freebsd-questions@freebsd.org
Subject: Re: Sendmail not accepting connections on port 25
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2011-07-20 06:24, ssgriffonuser skrev:

> I still can't telnet in from an external network.

To me, that sounds like your external network might be blocking outgoing 
traffic on port 25.

Can you connect to any other mailservers on port 25?

%telnet gmail-smtp-in.l.google.com 25
Trying 74.125.77.27...
telnet: connect to address 74.125.77.27: Connection refused
telnet: Unable to connect to remote host

My isp is blocking outgoing traffic on port 25.