[webmin-l] Postfix-Configuration for 'road-warriors'

[<dhu...@we...>]

Hi List!


At the moment I'm in progress to setup a box for ~70 domains with Webmin/Virtualmin --

can anybody shed some light on me how to configure Postfix to accept delivery for
'foreign' domains??? (Every help is welcome! Even RTFM --> 1. ...  2. ... 3. ...)


The situation is as follows:

- 1 Server; SuSE9.0; Webmin; Virtualmin; BIND9.x; MySQL; Postfix; Courier-IMAP; ...
- ~70 domains to setup with about ~300+ users
- Webmin/Virtualmin are working (like always...)
- DNS is working (TNX Jamie!!)
- MySQL (seems to be) working -- I'll have to check it later...
- Postfix/Courier-IMAP is working as it should (for incoming mails...)


Problem is:
- some users are sending their mails _directly_ (*@t-online.de / *.isp.tld / ...)
- some users (have to / will ?) use *our* server for relaying
- all users are 'dialin'-users (even those with 'non-permanent' xDSL-accounts)
- POSTFIX isn't an 'OpenRelay' by default/design
- Virtualmin is (only?) creating 'system-accounts', not any sort of *SQL
   (correct if I'm wrong)
- nor is Virtualmin creating additionals 'sender-X-can-relay-to-world' files or
   databases


Question(s):
- did I overlook some 'basic'-configurations ?
- how can we configure POSTFIX to authenticate allowed senders against the
   (by Virtualmin) created 'system-accounts' ?
- is anyone using POSTFIX with SMTP-auth against /etc/passwd | /etc/shadow ?
- is anyone willing to share the secrets with me on how to make it work ?


TNX & have a nice day!!
-- 
best greetings from Solingen -- GERMANY

    Dieter Hürten  /  Webmin-DE