Author: Giuliano Gavazzi Date: To: Exim Users Subject: Re: [exim] SMTP-Auth, specific users addicted to specific email
adresses
At 3:34 pm +0000 2004/11/04, Peter Bowyer wrote: >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.
>
I was thinking something along these lines, but I
would add a lookup of the alias file, to check if
the sender maps to the authenticated sender and
accept also in this case.
