multiple domains on same ip adresses

Joseph S D Yao jsdy at center.osis.gov
Tue Aug 22 22:31:51 UTC 2006


On Tue, Aug 22, 2006 at 02:15:00PM -0400, Michael Griffin wrote:
> After searching the archives, I could not find what I am trying to do.
> 
> I have two registered domains: foosol.com and foosolutions.com.  All
> of my servers are named after foosol.com.  In my named.conf, I have a
> foosol.com zone with the corresponding zone and reverse files.  My
> supervisor desires to have, at the very least, our DNS rseolve our
> mail server as mail.foosol.com and mail.foosolutions.com.  Can I use
> aliases (CNAMES)in my zone and reverse files or do I need to add a new
> zone with zone and reverse files?
> 
> Thanks,
> 
> Michael

You only have one reverse DNS zone for the set of IP addresses, not two.
You really should only have one PTR record per IP address.  It's not
illegal to have more than one, but applications expect one.

If you already have your DNS set up for both foosol.com and
foosolutions.com, you can just add an MX record in the foosolutions.com
domain that points to foosol.com's mail server.  In that mail server's
'sendmail' or 'postfix' configuration, allow it to accept e-mail for
both domains, or possibly to do different things for e-mail to the two
domains.  If you want CNAMEs from one domain pointing to the other,
that's certainly possible.

If you want the two domains to be identical, then here's a trick.  On
the name server with the master copy, use the same file.  On the name
server with copies of the zone slaved from the master copy, you will
have to use two different file names so they don't overwrite each other.

-- 
Joe Yao
-----------------------------------------------------------------------
   This message is not an official statement of OSIS Center policies.



More information about the bind-users mailing list