BIND 9.6 Flaw - CNAME vs. A Record in MX Records are NOT "Illegal"

[Mark Andrews]

In message <glm9t7$p39$1 at serpens.de>, Michael van Elst writes:
> Barry Margolin <barmar at alum.mit.edu> writes:
> 
> >customer.com. IN MX 10 mx.yourdomain.com.
> >mx.yourdomain.com. IN CNAME mx.outsourcer.com.
> >mx.outsourcer.com. IN A ...
> 
> That's just the same as
> 
> | customer.com. IN MX 10 mx.outsourcer.com.
> | mx.outsourcer.com. IN A ...
> 
> except to people with half-a-knowledge about DNS queries.

	Actually they are very different.  If you don't understand
	why they are different then you really have not had to run
	a substantial MTA.  Been there, done that, have the battle
	scars.

	Mark

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Mark Andrews, ISC
1 Seymour St., Dundas Valley, NSW 2117, Australia
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