Bill Honneus (honneus) wrote:
Hi,
I have a Mailman setup integrated with Sendmail on the same server.
When my list sends out posting updates via the bounces address, i.e.
[EMAIL PROTECTED], one of the recipients is an internal user
defined on the same local server. So my question is, when the
mylist-bounces sends out the updates, do the messages destined for local
addresses go directly to the local address without hitting the outside
or does mailman send all the messages out to the Internet, and then
those messages get routed back to the local machine? This is assuming
that no special routing is set up with Sendmail MTA.
---------------- End original message. ---------------------
MTAs are designed to deliver mail to the correct host based on the MX
record for a given domain.
So if the MX record for your own domain points to the machine with
the MTA Mailman is using, it will deliver it locally on the same
server. There is no reason for it to ever be placed on the wire
because it has nowhere else to go. In order for it to work as you
suggest, another SMTP server would have to serve as an open relay to
send it back and that is not such a good idea. It's bad because it
wastes bandwidth and because it leaves a big hole open for abuse.
Dragon
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Venimus, Saltavimus, Bibimus (et naribus canium capti sumus)
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