@lbutlr: > Has anyone implemented geo based restrictions for postfix login = > connections, or is this something that needs to be done in dovecot?
Accodring to a search engine, with seach terms "postfix geoip", there are many solutions. One uses postfwd with a geoip plugin to block SASL login from too many different countries. https://www.howtoforge.com/tutorial/blocking-of-international-spam-botnets-postfix-plugin/ No idea how well it works. > I was thinking someway to add most of Asia and Eastern Europe to = > postscreen checks would be useful? Postscreen does not implement SASL and that is a good idea. Wietse