On Thu, Jan 8, 2009 at 11:10 AM, Martin Spinassi <martins.li...@gmail.com> wrote: > On Thu, 2009-01-08 at 10:10 -0300, Reinaldo de Carvalho wrote: >> On Thu, Jan 8, 2009 at 9:20 AM, Martin Spinassi <martins.li...@gmail.com> >> wrote: >> > main.cf: >> > >> > smtpd_sender_restrictions= >> > check_client_access hash:/etc/postfix/access >> > reject >> > >> >> s/check_client_access/check_sender_access/ >> >> but this a problem if is a external MTA. >> >> > >> > Martín >> > >> > > > Hey! That did the trick! > > Thanks for the help. Can you explain me why is it a problem if it si an > external MTA? > > > Martín >
Because any sender not equal to example.com will be reject. You should enforce sender domain only for local network or autenthicated connections. Example: smtpd_sender_restrictions = check_sender_access hash:/etc/postfix/access # /etc/postfix/access example.com permit_mynetworks, permit_sasl_authenticated, reject # postmap /etc/postfix/access -- Reinaldo de Carvalho http://korreio.sf.net (Now available in English) http://python-cyrus.sf.net
