Good day, I am making the switch from running Sendmail as an internal relay to using Postfix. With Sendmail, I can restrict relaying by IP using the /etc/mail/access file.
I cannot seem to find an equivalent of this in Postfix. I have read about using smtpd_client_restrictions = check_client_access hash:/etc/postfix/access But it only "works" if I specifically say REJECT. The only method that works is to use 'mynetworks_style = subnet' (test machine happens to be on same subnet as the postfix server) but that is not what I want I want to put all the IPs I want to allow relay in a file and have postfix only read that. I don't want to put them all in main.cf, as there will be several hundred and we do not allow entire subnets, even server-based subnets. This is an internal relay used by internal applications that will either pass mail off to our Exchange server (internal users) or to the internet (external users). I won't need any other configuration. Thank you in advance Rich
