Re: [cobalt-users] MX record question / Raq4i

[Bruce Timberlake <bruce.timberlake@xxxxxxx>]

Lillith Lesanges wrote:
> 
> On Tuesday, December 18, 2001, at 09:21 AM, Phil Beynon wrote:
> > OK so as I see it the general consensus is that I should, for each site
> > have the following:-
> >
> > an A record ( and I assume PTR records ) for each virtual site
> > set as:-
> > ftp.xyz.com
> > mail.xyz.com
> > www.xyz.com
> > xyz.com
> >
> > and MX records for each pointing towards www.xyz.com
> 
> I -must- be missing something here.  Why would you go to the
> effort of creating a mail.xyz.com and then point MX records
> to www.xyz.com?  That seems particularly silly.

It's a flexibility issue, for me anyway.  By setting up your DNS/MX
thusly, if you need to migrate mail handling capabilities off the Cobalt
itself, all you have to do is modify the A record for mail.domain.com to
point to a different server.

Also, internally on the Cobalt, everything is handled by default at the
www.domain.com level.  Other hostnames etc are handled through server
aliases (email and web server) internally.  Those "aliases" need to be
represented externally via DNS "A" records, etc, so that the services
work properly...

-- 
Bruce Timberlake
Technology Engineer
Sun Cobalt Server Appliances
Sun Microsystems, Inc.

E: bruce.timberlake@xxxxxxx
U: http://www.sun.com/cobalt/