RE: [cobalt-users] RAQ4: DNS questions

[Rodolfo Paiz <rpaiz@xxxxxxxxxxxxxx>]

> My question is with regards to the statement that our MX
> records should point to the Virtual Site name (e.g.
> WWW.DOMAIN.COM)? Why is it necessary to do this instead of
> just pointing them at DOMAIN.COM?? How will this affect
> how mail is configured? I seem to have mail working
> currently, but have to confess that everytime I create a
> site it's a struggle to get incoming mail / aliases /
> catch-all address working. Always seems more luck
> than judgement :-)

I do:

mx       domain.com       ->       smtp.domain.com
 a  smtp.domain.com       ->       111.222.333.444

and everything works like a charm. This means (read left to right) that
the MX (Mail Exchanger) for domain.com is the machine smtp.domain.com.
That's how MX records work.

Using domain.com is equally valid, however, and there is no need to make
a separate address record.

The reason I keep it separate (I even use separate A records for pop,
smtp, and imap) is so that, if I ever decide to use one separate machine
to handle all mail forwarding, I can; if I ever decide to put
pop/imap/smtp on three separate machines, I can; and so on.

Your choice on how you wish to proceed. You don't *have to* use an MX to
the virtual site name.

--
Rodolfo J. Paiz
rpaiz@xxxxxxxxxxxxxx <mailto:rpaiz@xxxxxxxxxxxxxx>