At 06:51 PM 3/15/2006, Dustin Humm wrote:
We protect roughly 25 domains with
postfix/amavis/spamassassin. All of
these domains need to be able to talk to one another.
Although we are
using this system for incoming mail only, we, obviously,
need to allow
communication between the domains that we protect. What
we are running
into is a situation where spammers send an email destined
for DOMAIN.COM
and use DOMAIN.COM as the (spoofed) sender address. This
hits our
whitelist, etc. and is inevitably passed through the system...
It seems what you are trying to say is that mail from local
domains must originate from the local network, ie. postfix
$mynetworks. This is easily done in postfix, you've
already been shown links to a how-to. This will not
prevent one internal domain from communicating with another
internal domain, as long as the mail originates internally.
As I said, I've tried to accomplish this using meta rules
in SA, but
have not had any (good) luck...
Ask on the sa-users list for help with such a rule, but it
really sounds as if you are looking for the
already-suggested postfix solution.
--
Noel Jones
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