Problems with MX records?

Mark_Andrews at isc.org Mark_Andrews at isc.org
Tue Sep 16 00:08:26 UTC 2003


	You are attemptig to configure a CNAME and a MX record
	with the same owner name.  The following for RFC 1034
	explains why this is not allowed.

The domain system provides such a feature using the canonical name
(CNAME) RR.  A CNAME RR identifies its owner name as an alias, and
specifies the corresponding canonical name in the RDATA section of the
RR.  If a CNAME RR is present at a node, no other data should be
present; this ensures that the data for a canonical name and its aliases
cannot be different.  This rule also insures that a cached CNAME can be
used without checking with an authoritative server for other RR types.

--
Mark Andrews, Internet Software Consortium
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742                 INTERNET: Mark.Andrews at isc.org


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