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

[Christophe C. <chr...@pu...>]

Dieter H=FCrten a =E9crit :
> Problem is:
> - POSTFIX isn't an 'OpenRelay' by default/design

1. Simplest solution: dont relay, ask users to user to
    Use the mailserver of the ISP

2. smtp auth another solution (but mail client support?)
    Ex Debian Linux : postfix-tls

3. pop-before-smtp is an answer (smtp auth another one)

Relaying is ok if IP has done a valid POP auth in the
previous 30 min

Postfix Frequently Asked Questions
http://www.postfix.org/faq.html#virtual_relay

Dynamic Relay Authorization Control written by Gary Mills
http://mail.cc.umanitoba.ca/drac/index.html

POP3-Authenticated Relaying written by Curt Sampson
http://poprelay.sourceforge.net/

Debian packages for 3 : pop-before-smtp or drac

Christophe