Subject: Re: Greg Woods - please fix your mailer!
To: David Maxwell <firstname.lastname@example.org>
From: None <email@example.com>
Date: 07/06/1998 20:41:21
In message <firstname.lastname@example.org>, David Maxwell writes:
>The RFCs specifically state that an MTA MUST NOT accept a message unless
>it can guarantee being able to return error messages. By using a From: address
>with a host portion which has no MX, the mailer cannot be assured of its
>ability to return errors.
I was under the impression that the official behavior was to use the A record
as an MX if there isn't an MX listed.