Hi, I'm using postfix-3.5.10 and would like to use it to front-end a domain currently being managed by Google Workspace to be able to send mail through our filters first.
I know I'll need to redirect the MX, but how do I obtain a user list so I'm not just forwarding all email received for the domain through as a relay, and instead only to those users with current accounts? In the past, I believe it was using LDAP, but perhaps that's changed now? All references I currently see are using SASL and require the username/password combination of the user accounts. Any guidance on how best to do this would be appreciated. Thanks, Alex
