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Date: Tue, 11 Dec 2007 12:27:10 -0600 (CST)
From: Mark Tinguely <tinguely@casselton.net>
Message-Id: <200712111827.lBBIRArf009896@casselton.net>
To: aryeh.friedman@gmail.com, keramida@ceid.upatras.gr
In-Reply-To: <475ED0A2.7030205@gmail.com>
Cc: freebsd-questions@freebsd.org
Subject: Re: smart_host on sendmail min config
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It has been a long time since I tested rule sets, but try this:

(system prompt)$ sendmail -bt
ADDRESS TEST MODE (ruleset 3 NOT automatically invoked)
Enter <ruleset> <address>
> 3,0 user@gmail.com

Sendmail will print the rules it uses to parse the address. It should end
with something like:

 parse            returns: $# relay $@ YOUR . SMARTMAILER . DOMAIN $: user < @ gmail . com . >

Where YOUR.SMARTMAILER.DOMAIN is defined in your /etc/mail/sendmail.cf
as your relay mailer.

It should return your smart mailer even if the mail address does not resolve,
the smart mailer.

--Mark Tinguely.