Working perfect!
Thank you, Mr. Venema.

----- Mensagem original -----
De: "Wietse Venema" <wie...@porcupine.org>
Para: "postfix-users" <postfix-users@postfix.org>
Enviadas: Quinta-feira, 24 de maio de 2018 12:43:14
Assunto: Re: Same sender, same sasl user

Alfredo Saldanha: 
> Hello people 
> I'm trying to setup sender must be tha same sasl user authentication, but I 
> don't care where the connection comes from or is going. 
> I'd like only to prevent fake sender. I've tried 
> 'smtp_sender_dependent_authentication = yes', but I think that is not enough. 
> Some tip? 
> 

Maybe: 
http://www.postfix.org/postconf.5.html#smtpd_sender_login_maps 
http://www.postfix.org/postconf.5.html#reject_sender_login_mismatch 

Postfix also has reject_authenticated_sender_login_mismatch and 
reject_known_sender_login_mismatch for corner cases. 

Wietse 

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