Hi, I run 2.10.1 I think this should help http://www.postfix.org/VIRTUAL_README.html
maybe virtual_alias_domains = test.net test.com not sure what you would need to configure for mynetworks = http://www.postfix.org/postconf.5.html#mynetworks -ANGELO FAZZINA ITS Service Manager: Spam and Virus Prevention Mass Mailing G Suite/Gmail ang...@uconn.edu University of Connecticut, ITS, SSG, Server Systems 860-486-9075 From: owner-postfix-us...@postfix.org <owner-postfix-us...@postfix.org> On Behalf Of Software Information Sent: Tuesday, July 24, 2018 1:31 PM To: postfix-users@postfix.org Subject: Open Relay on local lan Hi All I have my postfix server up and running now for some time. Recently though, auditors made a deal that the server is an open relay. It is true that on the local lan it is. What's the best way to change this behavior? For example, is there a way to configure postfix to accept mail from say two domains, test.net<http://test.net/> and test.com<http://test.com/> but no other? Regards SI