Re: DNS goofups galore...

From: H. Peter Anvin (
Date: Thu Feb 08 2001 - 19:11:39 EST

"Michael H. Warfield" wrote:
> > Please explain how there is any different between an CNAME or MX pointing
> > to an A record in a different SOA versus an MX pointing to a CNAME
> > pointing to an A record where at least one pair is local (same SOA).
> Ah! But now you are placing conditions on it (that at least one
> pair is local). That is the very fine distinction that makes up the
> "not quite" in the "almost" above and the difference between the "should
> not" vs the "must not" in the specifications. You basically can't qualify
> it by saying "you can do this, but only if one pair is in the same SOA".

No. My point is that potential for inefficiency is not a valid reason
for banning something outright. This should be an administrative
decision, nothing more.


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