Re: [cobalt-users] RAQ4: DNS questions

["Gerald Waugh" <gerald@xxxxxxxxx>]

"Rodolfo Paiz" <rpaiz@xxxxxxxxxxxxxx>  wrote
> 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 that is good practice and I do the same thing.
The point being you (the admin) decide how you want to 
manage the smtp, pop, imap servers, and the users are
not in the loop. If you decide to move to separate servers,
the user still sends his mail to smtp.hisdomain and receives
his mail @ pop.hisdomain.
Gerald