Question about relay and costs

[Mike Kercher]

Many spammers attempt to hit MX's with a lower priority (your 20) since many
secondary MX's are not as secure (as yours is not).  Why not run MailScanner
on both of your MX's?  It would reduce traffic coming into your primary MX
as a large percentage of the spam would hit your secondary.  I would also
run your DNSRBL's at the MTA level on the 20 MX.

Mike 

-----Original Message-----
From: MailScanner mailing list [mailto:MAILSCANNER at JISCMAIL.AC.UK] On Behalf
Of Max Kipness
Sent: Friday, July 08, 2005 6:32 PM
To: MAILSCANNER at JISCMAIL.AC.UK
Subject: Question about relay and costs

Hello -

Hoping someone can offer advice on an issue I'm having.

I have a server with the latest version of MailScanner, and DNS configured
for the email domain with a cost of 10 pointing to this server.

I have another server that is not running MailScanner (yet) in another
location. It simply relays mail to the MailScanner server using Sendmail
with a cost of 20.

What's strange first off, is that tons of mail still passes through the
server with cost of 20, even though the primary MailScanner server with cost
of 10 never goes down. Anybody know how to prevent this?

The other question is what I might be able to do with the non-MailScanner
server so that when the mail does get relayed back to the MailScanner
server, it has the original IP of the sender, rather than the relay server's
IP. I believe this is causing SpamAssassin not to tag email with SpamCop or
XBL list scores.

Thanks,
Max

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