nem lehet, hogy a jo domaineknel a mode mas?
https://support.google.com/a/answer/9276511?hl=en
mode Policy mode:
testing: External servers send you reports about encryption and other issues detected when connecting to your domain. MTA-STS encryption and authentication requirements are not enforced
enforce: If the SMTP connection doesn't have both authentication and encryption, mail servers set up for MTA-STS won't send messages to your domain. You also get reports from external servers about connection issues, as in testing mode.
none: Tells external servers that your domain no longer supports MTA-STS. Use this value if you stop using MTA-STS. Learn about Removing MTA-STS (RFC 8461).