[CentOS] large numbers of linux system user for postfix

On Mon, Nov 8, 2010 at 7:25 AM, Ben McGinnes <ben at adversary.org> wrote:
> Assuming that Virtualmin doesn't have support for real virtual users
> or redirecting to MySQL for that then you have three basic choices:
>
> 1a) Use a different management interface for managing the
> Postfix/Dovecot configuration.
>
> 1b) Write your own extension for Virtualmin which provides this
> functionality (essentially a variation on 1a).
>
> 2) Stick with the existing mail server configuration which already
> works with Webmin and Virtualmin.
>
> 3) Create user accounts that do not provide an actual shell account
> (e.g. /bin/noshell).
>
> With the number of domains and users you're looking at, this could be
> a real problem, especially when the usernames might conflict between
> different domains.
>

Unless you encode the domain in the username of the unix user. "user#domain"

I quite like the idea of having separate UIDs for each user.  Let the
OS work for you...