how do I conceptualize system & virtual users?

[Mauricio Tavares]

On Jun 19, 2015 9:08 AM, "lejeczek" <peljasz at yahoo.co.uk> wrote:
>
> I guess this would be a common case, I am hoping for some final
clarification.
>
> a few Linux boxes share ldap (multi-master) backend that PAM/SSSD uses to
authenticated users, and these LDAPs are also is used by Samba, users start
@ uid 1000.
> Boxes are in the same both DNS and Samba domains.
>
> Do I treat these users as system or virtual users from postfix/dovecot
perspective?
> If it can be a matter of choice then which is better/best?
>
      I would make them virtual users. This way you can abstract and scale
things up. Also your normal users then would not need to have access to
your mail servers; they only access the services.

> many thanks.