>Wow, I hope this helps, because, frankly, I don't see how this applies to
>the problem at hand. Further, I really hope other people out there don't
>feel the need to create a dns entry for each subdomain (smtp, pop3, imap4,
>webmail)!
Better to think of them as "virtual hosts" or "virtual machines" rather
than "subdomains".
The more you have now, even if they point now to the same ip, the more
flexibility you have "behind" the hostnames to change the ip in the future
WITHOUT requiring the users to change their mail and address book settings.
The DNS system and virtual servers like Imail have great flexibility, why
not think forward a bit and use the flexbility now?
ie, let's say Ipswitch in Imail7 allows webmail to be on a different
machine from the SMTP/POP3 service (all aboard, the bandwagon is leaving
the station!!) or they don't do that but you find another solution that
does, but you have told all your x 1000's users that both SMTP and webmail
are at all piled up behind boring old mail.domain.com?
You have to get them all to change their programs when you are able to
offer them:
smtp.domain.com for their SMTP AUTH server for outbound mail (this could be
send-only mail gateway, not even Imail)
and
pop3.domain.com to pick up their mail (Imail "mailbox server")
and
http://webmail.domain.com as the URL for the Web messaging service, an
Imail HTTP server app + machine that POPs the mail from pop3.domain.com
machine.
Len
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