I am in testing policy mode for MTA STS and the TLS report in dmarcian shows Failure Type sts-policy-invalid for a comcast sender.
The dmarcian TLS Inspector tool verifies that setup is 100%. TLS Record is valid, MTA STS record is valid and STS policy is valid.
What does failure type sts-policy-invalid mean?
Where can I see more info about the specific event… more than is displayed when I drill into the single event record showing Sending MTA IP? In this case, Receiving IP and Failure Code are blank.
Where is there a list of Failure Types and Failure Codes to reference?