[57365] in North American Network Operators' Group
Re: An A record is an MX record and is a missing MX....
daemon@ATHENA.MIT.EDU (Michael Moscovitch)
Fri Apr 4 19:13:50 2003
Date: Fri, 4 Apr 2003 19:13:11 -0500 (EST)
From: Michael Moscovitch <michaelm@citenet.net>
To: Owen DeLong <owen@delong.com>
Cc: <nanog@merit.edu>
In-Reply-To: <2147483647.1049466820@imac-en0.delong.sj.ca.us>
Errors-To: owner-nanog-outgoing@merit.edu
At the risk of drifting off topic and draging this on more than I should:
On Fri, 4 Apr 2003, Owen DeLong wrote:
>
> There is one other situation where you need an MX record. If your domain
> is foo.com and the A record for foo.com is _NOT_ the machine that accepts
> mail for foo.com, you need an MX record pointing to the correct machine.
> Often this will be mail.foo.com or smtp.foo.com.
>
> Owen
Yes,
a very common example of this would be people who use
foo.com as the website address and that machine is not capable
of accepting mail.
I will not comment on this practice, because I might be flamed to a crisp
and I left my asbestos underpants at home. :)
>
>
> --On Friday, April 4, 2003 10:13 AM +0800 Indra PRAMANA
> <indra@indra.webvis.net> wrote:
>
> >
> > At 03:58 PM 4/3/2003 -0600, Gerardo Gregory wrote:
> >> 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.
> >
> > This is always the case. MX records are only required if you want to have
> > more than one mail exchange servers to serve your domain, e.g. if you
> > want to have a secondary mail server as a relay if the primary server
> > goes down.
> >
> > If you only have one mail exchange server to serve your domain, you don't
> > need MX records. An A record pointing to your mail server is sufficient.
> >
> > -ip-
> >
>
>
>
+--------------------------------------------------------------------------+
| Michael Moscovitch CiteNet Telecom Inc. |
| michaelm@citenet.net Tel: (514) 861-5050 |
+--------------------------------------------------------------------------+
