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Subject: Virtual Domains question
From: Andrew Houghton (aahacm.org)
Date: Sun Aug 20 2000 - 19:23:12 CDT

Hi; I've been reading the faq and the list archives, but I'm still confused
about virtual domains -- I only know enough to be dangerous, and I want to
get out of that stage as soon as possible. =)

I'm doing virtual IP-based web hosting with my server. In order to cut down
on clutter and make life easier, all the MX records for my hosted sites
point to a single IP address, which is the only interface my postfix daemon
is listening to (besides local).

1) I'd like to make my life as admin as easy as possible, but still allow
some way for users to create mail forwarding addresses and new user names
for whoeverhostedsite.foo. Should I be looking into LDAP or SQL as a way
to store maps?

2) Each hosted domain has a top-level directory, with an ftp directory and
web directory hanging off of it. I'd like to add a mail directory there, so
mail is effectively part of their quota, but I don't know how to go about
doing this.

3) At the moment, I understand that in main.cf I should have the following:
virtual_maps = hash:/usr/local/etc/postfix/virtual.hostedsite1.foo
virtual_maps = hash:/usr/local/etc/postfix/virtual.hostedsite2.foo
virtual_maps = ....

and each of the virtual maps should look something like this:
hostedsite.foo whatever
webmaster ???

But I don't understand what to put in for the ???. I want to allow people
to use a pop3 server to get their mail from mail.hostedsite.foo, but I don't
necessarily want them to actually exist as system users.. I'm a little
confused.

Am I going in the right direction?

Thanks for any help -- I'm trying to get up to speed on all this as quickly
as possible, and I'm sure I've missed some important points.

- Andrew