Autor: Peter Bowyer Data: A: Exim Users Assumpte: Re: [exim] SMTP-Auth,
specific users addicted to specific email adresses
Mirko Grÿffffe4fen wrote: > hi all,
>
> this whole authentication stuff is running well on my
> system (cram_md5).
> because i´m hosting some domains for different people,
> i need to know how a user can authenticate at exim and
> send mails only by his real email adress.
> so, that also autherized senders can´t fake their
> adresses.
>
> system running is a debian sarge with exim 4.34
> thanks!
You can probably use $authenticated_sender in an ACL at MAIL or RCPT time.
eg
deny message = Don't forge your From address
!senders = $authenticated_sender
authenticated = *
Or something. Treat the above as something to get you thinking along
the right lines, not as something to copy/paste.
