[pfx] Re: reject_sender_login_mismatch only for some SMTP accounts

First of all, thanks for your quick help. > /etc/postfix/main.cf: > smtpd_sender_login_maps = > unionmap:{hash:/etc/postfix/sender_logins.cf, > pcre:/etc/postfix/sender_logins.pcre} > [...] Thanks for the trick. I did not realise that I could achieve that with a regular expres

[pfx] reject_sender_login_mismatch only for some SMTP accounts

Hi all: Some popular web/mail hosting providers in Germany have their SMTP servers configured so that anybody with an account x...@example.com can impersonate any sender address like y...@example.com, even though each user has his/her own SMTP password for sending purposes (which is usually th