Am 28.12.2014 um 21:31 schrieb Jonathan Hermann:
would like to enforce authentication to prevent spam
incoming or outgoing? * outgoing: see blow * incoming: setup a contentfilter and other rules for mail without SASL auth
But at the same time, I need to be able to receive mail from public mail providers. Is there a way to have both?
surely and it is ordinary MTA behavior permit_sasl_authenticated, reject_unauth_destination you need to design the right order for rules, taht's it http://www.postfix.org/postconf.5.html#reject_unauth_destination