From: Clifton Royston (no email)
Date: Thu May 02 2002 - 04:16:14 EDT
On Wed, May 01, 2002 at 09:08:38PM -0700, Keith Woodworth wrote:
> We have now grown to a point where we need to split pop, webmail and smtp
> between two machines.
>
> One of the main things that has come up is since the ISP side of things
> has been in operation 7+ yrs the pop and smtp names for the users has
> always been mail.citytel.net, which is acutally a CNAME to the real
> server.
Now is a good time (well, a few years ago would have been a good
time!) to rewrite the configuration instructions for your users to use
"pop", "imap", "smtp", and "webmail" in the appropriate places. If you
do it now, at least the headache will slowly reduce going forward.
> Now we want to put a machine in place for smtp but splitting pop and smtp
> between 2 machines is going to be a pain with the names such as they are
> for the users.
>
> We still need to accept mail.citytel.net on the smtp server, but users
> will still pop mail from mail.citytel.net as well as use mail.citytel.net
> as their smtp relay.
> So you can see the problem. I'm thinking some sort of DNS configuration
> changes to make this work.
>
> Have mail.citytel.net be MX'd to the SMTP machine, but make a new CNAME so
> mail.citytel.net will point to the POP server? But that will be bad
> because then users will try to relay through it as its their SMTP relay.
> since thats what they all have as their SMTP relay.
Keep things simple for yourself:
your-domain MX 10 your-smtp-server
your-smtp-server A x.y.z.w
your-pop-server A x.y.z.q
smtp CNAME your-smtp-server
mail CNAME your-smtp-server
pop CNAME your-pop server
Now add some tunneling software on your smtp server, so that port 110
connections get tunnelled through that server to your real pop server.
We use Peter da Silva's "plug daemon" for that and it works OK. If you
have IMAP you can tunnel that too.
This should meet your needs. If you think you'd actually have users
who've configured "webmail" as their POP server, then you'll have to
add a similar tunnel service on webmail.
-- Clifton
--
Clifton Royston -- LavaNet Systems Architect --
"What do we need to make our world come alive?
What does it take to make us sing?
While we're waiting for the next one to arrive..." - Sisters of Mercy
-
To unsubscribe, send mail to with content
(not subject): unsubscribe postfix-users
|
|
|