On Thu, Dec 19, 2002 at 03:55:44PM -0500, Ross Vandegrift wrote: > The primary MX host just routes mail to the delivery server. How have > you guys handled this problem? Ideally, I'd rather not have two > machines with real work to do spend so much time trying to send out > bounce messages to non-existent spammer addresses.
The way I do this is through the use of alias or virtusertable
configurations. The mail router has a list of all valid addresses,
and it's always something like:
user: [EMAIL PROTECTED]
That way the router can accurately do "user unknown" stuff. Typically
inside I have an "aliases.inside" and "aliases.outside". The internal
mail server(s) use both, but the mail router only gets aliases.outside.
That way I can have internal-only aliases/mailing lists/etc without
worrying about outside folks hitting them.
It also allows you to do some neat things like specifying user->mailserver
combos, which works great when you have 11 offices each with their own
mail server... ;)
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