I am trying to understand how pop before smtp works in dbmail. I have postfix setup to check_client_access via the dbmail_pbsp table. I can't see any documentation proving this, so please correct me if I am mistaken.
When a user attempts to use my mail server for smtp relay postfix checks the dbmail_pbsp table for my ip address and then relays the message if found or if not found it then checks for the user account trying to relay the mail and then if found adds the ip to dbmail_pbsp so the next time a user tries to send an email if the ip is found it just relays? Am I correct here? If not, please explain the pop before smtp process and dbmail_pbsp. Thanks, Nate
