On Tue, 2006-06-20 at 14:19 -0400, John Hinton wrote:
> >
> > Every seems to be fine, but I'm constantly receiving messages in my 3 MX
> > servers, even if mail.example.com (the less MX record) is available
> > waiting for connections from outside... Why if my less mx record server
> > is available the others servers are constantly receiving messages for my
> > domain?
> >
> >
> There is a sendmail milter available for dealing with this. Basically,
> it can tell the backup mailservers to look for the primary before
> receiving mail. This is pretty much a must if you're going to do any
> volume of reliable email service. It also can look ahead for a real user
> before receiving mail on a backup system. The milter is called milter-ahead.
>
> http://www.milter.info/sendmail/milter-ahead/
>
> It does cost a bit... for commercial use.. or is free for individual use.
If you mean to check for a valid smtp recipient on a different machine
before accepting for forwarding, it is relatively easy to do that
with MimeDefang too - along with about any other virus or spam
checks you'd like: http://www.mimedefang.org/.
--
Les Mikesell
lesmikesell@xxxxxxxxx
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