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 :: Mailing Lists

[ILUG] CNAME and MX record with the same name

[ILUG] CNAME and MX record with the same name

Achim Dreyer adreyer at math.uni-paderborn.de
Sun Dec 18 14:49:47 GMT 2005


On Sun, 2005-12-18 at 14:30 +0000, Niall O Broin wrote:
> On 18 Dec 2005, at 13:47, Achim Dreyer wrote:
> 
> > With your first setup something is just an alias(CNAME) for the zone.
> > I'm quite sure that the documentation mentions that you can't associate
> > any other RR with an alias.
> 
> No cigar on that one I'm afraid. This
> 
> something  3600    IN      A       1.2.3.4
> otherthing 3600    CNAME   A       something
> otherthing 3600    IN      MX	99	 mail.wherever.com
> 
> is also illegal, so it's not just with an alias for the zone.
> 
> 
> Niall


So "something" is the real thing (a machine) and "otherthing" is an
alias for that thing - and an *alias* can not have another RR record
attached (which in your case is an MX record). Only real things can 
have further RRs (attributes).

The wording of the CNAME definition is in my eyes very confusing. The
above is how I would describe it.


-- 

Regards,
Achim Dreyer




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