Good day I have a newly built postfix server which is ignoring it's transport file and is querying DNS for MX records instead. I have googled the issue but only come up with "how to use transport file" articles. The /etc/postfix directory was copied from our Production relay and is working as expected. I have verified the transport file is populated with the correct destination relays, which are different from the internal MX record. I have updated the transport. db file using postmap and there is no change. I have verified the correct line to reference a transport file is in main.cf and I have restarted the postfix service several times.
Since everything appears to be correct, I am thinking this may be a versioning difference? Here are the OS and postfix versions on the servers: Existing Production Server: Red Hat Enterprise Linux Server release 6.10 (Santiago) mail_version = 2.6.6 New Server: Red Hat Enterprise Linux Server release 7.9 (Maipo) mail_version = 2.10.1 Could this be a versioning issue or do I need to look somewhere else? Thanks, Rich