Magnus Bäck a écrit :
> On Thursday, December 11, 2008 at 19:25 CET,
>      mouss <mo...@netoyen.net> wrote:
> 
>> smtpd_sender_restrictions =
>>      check_sender_access hash:/etc/postfix/mysenders
>>      reject_unauth_destination
>>      ...
>>
>>
>> == mysenders:
>> example.com  OK
>>
>> Note that this works for the envelope sender, not the From: or
>> reply-To: headers.
> 
> This method of course assumes that the webmail application submits
> messages via SMTP and not sendmail(1). From what the OP has written
> so far this is not necessarily the case.
> 

Indeed. I'm too used to smtp that I forget sendmail submission...

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