Mailscanner & redirected mail

[Steve Freegard]

Devon Harding wrote:
> Ok, here's my dilemma.  My ISP has blocked port 25 on my connection, so
> I'm forced to have my DNS provider (EasyDNS) redirect all my email to
> port 2525.  This works fine, the only problem now is I'm seeing an
> influx of SPAM which I believe is because MailScanner is seeing EasyDNS
> as a safe sender & not processing any rules based on IP Address.  How do
> I get MailScanner disregard the IP address from EasyDNS and process the
> next hop?  I guess something like X-Forwarded-For for SMTP.

>From the changlog of the latest 4.77 release:

"Read IP Address From Received Header" has been extended, so it will now
take a number instead of yes or no. "yes"=1 and "no"=0. If it is set to
"yes" or a number, then the SMTP client IP address is taken from the
"Received:" header. For example, setting it to 2 will cause the IP
address to be taken from the 2nd Received: header.

That should do what you need.  You'll also need to set SA's
trusted_networks otherwise it will be less accurate when it does network
checks.

Cheers,
Steve.