?????? #15432 ?????? ???????? SIMS@mail.stalker.com
?? ????: billc <billc_lists@greenbuilder.com>
????: Re: SIMS dual domains
????: Wed, 7 Feb 2007 16:22:25 -0600
????: SIMS Discussions <SIMS@mail.stalker.com>
At 9:45 AM -0800 2/7/07, Christopher Bort wrote:

 Set up CNAME on old domain name record:
 mail.olddomain.com CNAME mail.newdomain.com
 Remove A record for mail.olddomain.com
 MX record on old domain points to mail.newdomain.com

That's all optional and entirely up to you. The record for
mail.olddomain.com can remain as an A, especially if you're reasonably
confident that your server will keep the same IP address for a while.
CNAMEs can get messy, so I usually try to avoid them when an A record will
do the job.

Actually, there are those that consider it mandatory that MXs point to A records.  QDNS won't even let you put in a C name for an MX these days.  (sorry, i'm not one of those RFC quotin' kind of guys, but that's probably where it stems from)

Bill Christensen

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