Hi, I was under the impression that
smtpd_sender_restrictions=check_sender_access hash:/etc/postfix/sender_access would take a list of domain and either reject or discard the message on reaching the server, based on the content of the file /etc/postfix/sender_access. Maybe I am totally confused about this? In my main.cf it seems not to have the desired effect. Anyone able to shed some light on my meager understandings of postfix. /Martin S