What does this finding mean?
The version or id cannot be evaluated according to the expected syntax.
MTA-STS result code
Invalid MTA-STS TXT record
mta.record_invalid
What is the next step?
Correct the record syntax, then check the HTTPS policy.
Please note: The result code describes a technical measurement, not a guarantee of delivery, security or legal compliance.
Content reviewed on 20.08.2026.