Sendmail to Relay different domains to different hosts

Dan Nelson dnelson at
Fri Feb 6 11:00:38 PST 2009

In the last episode (Feb 06), Greg.Stark at said:
> 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?

You want to use the /etc/mail/mailertable file:

	Dan Nelson
	dnelson at

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