> Date: Fri, 19 Jul 2002 12:52:58 +1000
> From: [EMAIL PROTECTED]
> Message-ID: <[EMAIL PROTECTED]>
>
> | Well given that if you are looking for a MX for "foo" you
> | want to send mail to foo and the fallback if there isn't a
> | MX for foo is to look for a address record I would say that
> | it is a indentical senario.
>
> No, one is explicitly looking for an MX, the other is looking for
> any address. It is only appropriate to look for the A record
> corresponding to a name if the MX record is first found not to
> exist. Finding an A record that might apply to some other variant
> of the name is irrelevant. You'd have to complete the MX search anyway.
>
> On the other hand, "find me any A or AAAA records" is satisfied by
> either A, or AAAA or both.
>
> kre
Well when I type "mail user@foo" I don't care if there is
a MX record or not. MX records are NOT manditory. Until
they are made manditory the search for MX and address records
should be done in parallel.
This is the same as the search for A / AAAA / A6 should be
done in parallel even if you are *not* going to return one
of the address families.
Mark
--
Mark Andrews, Internet Software Consortium
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742 INTERNET: [EMAIL PROTECTED]
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