Sendmail to Relay different domains to different hosts
Giorgos Keramidas
keramida at ceid.upatras.gr
Fri Feb 6 11:00:01 PST 2009
On Fri, 6 Feb 2009 13:15:02 -0500, <Greg.Stark at sungard.com> wrote:
> I am using Sendmail on a FreeBSD7.0 server as a mail relay for some of
> our servers. These servers relay messages to both internal recipients
> and external customers. I need to be able to relay mail destined to
> our internal domain recipients to our corporate mail servers but relay
> everything else out to our usual smart host. So basically, I am
> looking to relay emails destined for a certain domain to one host and
> the rest of the mail to another. Does anyone know how I could
> configure sendmail to accomplish this?
That's what `mailertable' is for.
Enable in your `sendmail.mc' file the mailertable feature:
FEATURE(`mailertable', `hash /etc/mail/mailertable')
Then create an `/etc/mail/mailertable' map with something like:
@internal.domain esmtp:[internal.relay.host]
Generate the `mailertable.db' map with makemap:
# cd /etc/mail
# makemap hash mailertable < mailertable
and you're done.
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