Sendmail to Relay different domains to different hosts

[Greg.Stark at sungard.com]

Just did some testing.  A single entry for the corporate domain as
described below and the smarthost set for everything else seems to work.


Thanks very much everyone!

Greg


-----Original Message-----
From: owner-freebsd-questions at freebsd.org
[mailto:owner-freebsd-questions at freebsd.org] On Behalf Of
Greg.Stark at sungard.com
Sent: Friday, February 06, 2009 2:10 PM
To: steve at ibctech.ca
Cc: freebsd-questions at freebsd.org
Subject: RE: Sendmail to Relay different domains to different hosts

Great!  I will give this a try.  

If I put a single entry into the mailertable for the corporate domain
would everything else default to the smarthost defined in sendmail.cf?

Thanks,

Greg



-----Original Message-----
From: Steve Bertrand [mailto:steve at ibctech.ca] 
Sent: Friday, February 06, 2009 2:03 PM
To: Stark, Greg
Cc: freebsd-questions at freebsd.org
Subject: Re: Sendmail to Relay different domains to different hosts

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?

Yes.

Take a look at the `mailertable.sample' file. Create an empty
'mailertable' file in /etc/mail, and add the domain-to-server maps to
it:

corporate.com	smtp:relay.corporate.com
other.com	smtp:some.other.server.com

...and then IIRC:

# cd /etc/mail
# makemap hash mailertable < mailertable

Steve


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