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From: Ollivier Robert <ollivier.robert@eurocontrol.fr>
Subject: Re: Santiago Zapata: mx records & sendmail
To: gpalmer@freebsd.org (Gary Palmer)
Date: Wed, 10 Jul 1996 16:43:47 +0200 (METDST)
Cc: doc@freebsd.org
In-Reply-To: <29560.836957828@palmer.demon.co.uk> from Gary Palmer at "Jul 10, 96 01:17:08 am"
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According to Gary Palmer:
> Someone want to add an appropriate question/answer for this to the
> FAQ? It's getting to be a VERY FAQ, and is definate material for the
> FAQ, even after we get the mail handbook section written...
> 
> Thanks
> 
> Gary

> ------- Forwarded Message
> 
> Date:    Tue, 09 Jul 1996 17:56:05 -0600
> From:    szapata@data.net.mx (Santiago Zapata)
> To:      freebsd-isp@FreeBSD.org
> Subject: mx records & sendmail
> 
> Hi:
> 
> I am trying to setup a DNS & mail server. I would like to have e-mail
> addresses like: name@my_domain.
> 

Here we go (no time to SGMLify it sorry):

Q: I want to configure my sendmail to emit only user@domain.name but it keeps
   bombing with a "MX points back to myself" error. What can I do ?

A: To send and receive mail with only the domain part of an address, you'll
   need to do this:

   - use

     MASQUERADE_AS(domain.name)

     in the whatever.mc file you've written in order to change all outgoing
     mail messages,

   - make the MX record for the domain point to the mail server

     domain.name.    IN     MX  10 mailhost.domain.name.

   - insert the following in the whatever.mc file

     FEATURE(use_cw_file)

     Using this feature is easier than just put domain.name in Cw because
     you'll not need to re-m4 the file each time you add a new domain.

   - create a file named by defult /etc/sendmail.cw and add the following:

     domain.name

     in it. "domain.name" is now a "local" address.

-- 
Ollivier ROBERT -=- Eurocontrol EEC/TIS -=- Ollivier.Robert@eurocontrol.fr