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
