Hello
I trace route to the smtp.mail.yahoo.com and get the IP address of the server
along the way as one of the hops but when I tried telneting to
smtp.mail.yahoo.com I get the following
C:\Documents and Settings\cee>telnet smtp.mail.yahoo.com 25
Connecting To smtp.mail.yahoo.com...Could not open connection to the host, on
port 25: Connect failed
Cimoni Enwis Ogwujiakwu
--- On Wed, 8/25/10, Dominic Benson <domi...@lenny.cus.org> wrote:
From: Dominic Benson <domi...@lenny.cus.org>
Subject: Re: Problem scanning mails with Spam Assassin on Postfix
To: users@spamassassin.apache.org
Date: Wednesday, August 25, 2010, 2:02 PM
On 25/08/10 12:22, Cimoni Enwis Ogwujiakwu wrote:
Hello
I have a spam assassin server setup on postfix and I can scan mails from mail
clients configured with the server as the smtp outgoing settings but when I
change the settings to smtp.mail.yahoo.com the mail is sent without being
scanned by the server and there is no log of the transcation in
/var/log/maillog. The spam server is sitting in front of a firewall that
redirects all port 25 traffic through it. Pleas I need assistance urgently.
It sounds like some part of your firewall redirection isn't working. There are
three possibilities that come to mind:
1) The clients are using another port to contact smtp.mail.yahoo.com (465 or
587, for example)
2) The firewall doesn't do what you think (e.g. it doesn't match those source
addresses)
3) The clients aren't going through the firewall.
For (1) Checking ports in use is trivial.
For (2) try telnetting to some server on port 25 from behind the firewall and
see who HELOs
For (3) try a traceroute from one client to smtp.mail.yahoo.com to see if the
firewall is one of the hops.
Hope that helps.
Dominic
