From: Karl S. Katzke (karlstreetlampsoftware.com)
Date: Thu Sep 01 2005 - 19:38:29 CDT

• Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]

I've got a strange problem, and I'm not quite sure how to solve it.

I have a customer who's NAT IP address has made it into the CBL thanks
to a virus that one of their users caught. Unfortunately, all of their
email is getting marked as spam by people who listen to the CBL because
I have their email server misconfigured in a very confusing way.

Usually, in mail headers, the first "Received:" header line is the
originiating SMTP server.
In my case, the first "Received:" header is actually my client's NAT'd
IP address and machine name, not my SMTP server. They are not sending
through any sort of local proxy or local smtp server; they do connect to
my server address and then submit the mail to the SMTP server.

I *am* doing SMTP auth using SASL, but obviously I have something
misconfigured in Postfix in that postfix is acting like a relay rather
than an originator... or am I barking up the wrong tree here? Any hints
or ideas on what to check?

Thanks,
Karl Katzke

• Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]