Re: [cobalt-developers] Mail Settings

[Jeff Lasman <jblists@xxxxxxxxxxxxx>]

All of us here wrote:

> Simplest dns setup I've seen.
> 
> Add new A record with reverse lookup for:
> domain.xxx
> www.domain.xxx

This is an extremely confusing set of instructions for me.

I'll presume he already had an A record at least for "domain.com" and
probably for "www.domain.com" as well.  If not, you certainly need one
for "www.domain.com".

But you should only have ONE PTR record per IP#.  If you don't already
have a PTR record for the IP# on which this virtual site resides, then
you need to have one, and only one.  Personally, I recommend setting it
to the machine's canonical hostname and domain name.

However, this'll only work if YOU've got reverse delegation.  MOST of us
don't.  The only way to find out for certain is to check with your ISP
(or upstream provider, colo-provider). If you don't have authority, then
you need to ask your ISP (or provider) to do it for you, as it won't be
visible to the world even if you do it on your RaQ.

> Add new MX record for www.domain.xxx

A new MX record FOR www.domain.xxx will allow you to get mail for
<user@xxxxxxxxxxxxxx>.  Is that what you're talking about?  To get mail
addressed to <user@xxxxxxxxxx> what you need is an MX record for
domain.xxx, pointing to ANY A record for any domain, as long as that
domain's IP# is on the same RaQ.

> Pop/SMTP servers in email system just have www.domain.xxx

Maybe it's just your terminology, but you said an MX record "for"
www.domain.com.  I'm guessing you mean an MX record for "domain.com"
pointing to "www.domain.com".  As I wrote above, it doesn't matter what
the MX record points to, as long as it's pointing to an A record for a
domain hosted on the same system.

Jeff
-- 
Jeff Lasman <jblists@xxxxxxxxxxxxx>
nobaloney.net
P. O. Box 52672
Riverside, CA  92517
voice: (909) 787-8589  *  fax: (909) 782-0205