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Re: adresse email avec hôte dyndns



On Mon, Jun 06, 2011 at 11:50:19PM +0200, Frédéric Marécaille wrote:
> Je pensais qu'un MX est obligatoire pour se créer une adresse email.

Je me suis posé la même question, et l'on trouve dans RFC 2821 chapitre 5:

"The lookup first attempts to locate an MX record associated
with the name.  If a CNAME record is found instead, the
resulting name is processed as if it were the initial name.
If no MX records are found, but an A RR is found, the A RR
is treated as if it was associated with an implicit MX RR,
with a preference of 0, pointing to that host."

Donc le MX est bien optionnel et remplacé par un
enregistrement A s'il n'existe pas.

Y.


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