From marco.menegon@dialogos3.it Wed Aug  9 12:36:17 2000
Date: Wed, 09 Aug 2000 13:19:53 +0200
From: Marco Menegon <marco.menegon@dialogos3.it>
To: Jeremy C. Reed <reed@wcug.wwu.edu>
Cc: Webproject Hostmaster <hostmaster@webproject.es>,
     Lista de correo gnu-pod3d <gnu-pop3d-list@ndn.net>
Subject: Re: Multiple Domains+Bad login+Postfix configuration

I've done another thing, maybe more dirty than the previous one, I don't
know, but for me it's OK: it's secure and enough flexible for the
various virtual domains.

*** BEGIN ***

First step:
	For every virtual domain (es. foo.com) create n users in /etc/passwd:
		foo_1
		foo_2
		...
		foo_n
	These users can be DISABLED; only the entry in /etc/passwd is
necessary.

Second Step:
	in /etc/postfix/virtual define the apposite corrispondences, ad es:
		@foo.com	foo.com virtual domain definition
		mary@foo.com	foo_1
		peter@foo.com	foo_2
		...	...
		john@foo.com	foo_n

	In this way postfix will save each user mail in the appropriate mailbox
(/var/spool/mail/foo_x).
	The drawback is that the user name is lost (well, seems lost ;)).

Third step:
	in /var/spool/virtual/foo.com/
	create appropriate links:
		mary -> /var/spool/mail/foo_1
		peter -> /var/spool/mail/foo_2
		...	...
		john -> /var/spool/mail/foo_n
	In this way the POP server could access the mailboxes by way of links.

*** END ***

In this way we have:
	- some accounts disabled in /etc/passwd and the POP passwords in
another file (security ok)
	- POP users can access the pop server with real, more intuitive, names
(es. mary:foo.com)
	- with some little effort (measured in Perl programming) it's possible
to give every single virtual domain "master" user the possibility to
change mailbox names, etc. ( I suppose to give n mailbox by default, and
so n users in /etc/passwd; "master" users should buy another n accounts)

I'll appreciate comments to my approach...

Thanks in advance,
	-Marco-