Add logging info for untrusted sender

[Loïc Elineau]

I am not sure I explained my problem correctly:
Actually, every user who wants to send mail with our servers has to 
authenticate its SMTP connection. We don't trust any network at all.

The problem is, that when a user don't authenticate, the server relay the mail 
if the recipient is the same as the unauthentified sender, just prefixing the 
sender with "UNTRUSTED".

I don't want kolab to add "UNTRUSTED", I'd like it to respond with 550 error. 
I am not sure SPF will be the right solution for this problem. Is it?

Best regards,
> >
> > Is there a way to block untrusted sender if they pretend being from a
> > domain at the kolab server? Another solution should be to add logging
> > info to portfix.log (and thus eject them thew fail2log). But how to
> > achieve this?
> >
> > best regards,
>
> SPF is the solution, but their is no support integrated into kolab yet.

-- 
Loïc Elineau
http://www.benefacere.fr/