[Dovecot] best choice of user database file to work with postfix?

[Phil Howard]

On Thu, Apr 22, 2010 at 12:07 PM, Jim Trigg <jtrigg at spamcop.net> wrote:

> On Thu, Apr 22, 2010 at 09:48:36AM -0400, Phil Howard wrote:
> > The ideal would be a complete mail server package that handled it all in
> one
> > ... SMTP, submission, IMAP(S), POP3(S).  But what I've seen as attempts
> to
> > do that so far were less than promising (even though I have no need for
> what
> > most of the MTAs do).
>
> The only one like that I know of is Courier, and I found it incredibly
> frustrating to work with.  I use dovecot and postfix, but don't have the
> virtual user issue -- all of my users (for twelve domains) have real
> accounts.
>

I would have done that, except for the fact that there is the issue of same
user name users under different domains, and I don't want the mess of
mapping those in strange ways to system users (and I don't want "@"
characters in system users).