postfix-users

Re: dns A records not used when there's no MX

Subject: Re: dns A records not used when there's no MX
From: Chris <racerx AT makeworld DOT com>
To: Rod Dorman <rodd AT polylogics DOT com>
Date: Sat, 11 Aug 2007 21:27:41 -0500
On Sat, 11 Aug 2007 22:11:24 -0400
Rod Dorman <rodd AT polylogics DOT com> wrote:

> On Saturday, August 11, 2007, 21:10:21, Chris wrote:
> >   ...
> > You NEED a valid MX record for mail to work.    ...
> 
> No, you don't.
> 
> RFC 2821 section "5. Address Resolution and Mail Handling" is quite
> explicit.
> 
>    "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."
> 
> 

While that may be true, users that setup RFC compliant servers may
reject the Ops server. In addition, if the Op is able to do his/her own
DNS - then it's a poor way of doing DNS imho.

-- 
Best regards,
Chris
Registerd Linux user number 448639

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