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Date:      Mon, 15 Jan 2001 09:13:55 -0800 (PST)
From:      Javier Henderson <javier@KJSL.COM>
To:        Chris Cook <ccook@tcworks.net>
Cc:        Dirk Meyer <dirk.meyer@dinoex.sub.org>, freebsd-isp@FreeBSD.ORG
Subject:   Re: sendmail queue
Message-ID:  <14947.12243.400265.573953@bogon.kjsl.com>
In-Reply-To: <3A632F85.90C1F83@tcworks.net>
References:  <Pr5d9lj5YQ@dmeyer.dinoex.sub.org> <Pine.BSF.4.21.0101131042110.45824-100000@arnold.neland.dk> <WndPflj5YQ@dmeyer.dinoex.sub.org> <3A613A19.3D7A6895@quake.com.au> <002401c07df7$ac1c3de0$0400a8c0@Home> <21e7dW2RC5@dmeyer.dinoex.sub.org> <3A632F85.90C1F83@tcworks.net>

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Chris Cook writes:
 > I have had many people tell me that using a CNAME to point to a mail
 > server is a very bad thing that will cause issues with some MTA's... can
 > anyone explain to me why?  (just saw a CNAME for a mail server in this
 > example).

	MX records are supposed to point to hosts for which an A
record exists. Most MTA's will work with MX records pointing to
CNAMEs (some will log a warning) however.

	A big offender of this rule is AOL, for example.

-jav


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