> On 30.09.19 11:40, Christos Chatzaras wrote: >> Add this line to main.cf : >> >> smtpd_sender_login_maps = hash:/usr/local/etc/postfix/smtpd_sender_login_maps >> >> And then add to smtpd_sender_login_maps : >> >> u...@example.com u...@example.com > > This only validates envelope from headers according to SASL login names. > It's good to check, though. >
Many spammers using hacked accounts use different "From" than the e-mail address. So it helps in this case.
