[57329] in North American Network Operators' Group
Re: An A record is an MX record and is a missing MX....
daemon@ATHENA.MIT.EDU (Richard Irving)
Thu Apr 3 17:26:14 2003
Date: Thu, 03 Apr 2003 17:25:35 -0500
From: Richard Irving <rirving@onecall.net>
To: Gerardo Gregory <ggregory@affinitas.net>
Cc: nanog@merit.edu
Errors-To: owner-nanog-outgoing@merit.edu
Gerardo Gregory wrote:
<snip>
> Since then I have learned that some MTA's will look for an A record if it
> cannot find an MX record and use the A record instead.
Once upon a time that was near all Micr0$loth did...
> Is this acceptable (in a "best case scenario") as a correct method?
It isn't exactly completely RFC compliant, but, it is only a -=Request=-, eh ?
But, FWIW, since when is a system =-without-= proper fall backs,
a "best case scenario" ?
> Obviously some admins I have encountered are starting to host mailservers
> for sub-domains and domains without MX entries on their DNS zone records.
> Relying on the A record alone.
Lemmings make a mad dash towards a cliff, every so often, en masse....
* shrug *
Go figure. :P
> Gerardo A. Gregory
:)
