What does this finding mean?
At least one published mail server matches none of the mx patterns.
MTA-STS result code
MX not covered by MTA-STS
mta.mx_not_covered
What is the next step?
Add the required policy pattern through a controlled change, or remove the obsolete MX target.
Please note: The result code describes a technical measurement, not a guarantee of delivery, security or legal compliance.
Content reviewed on 20.08.2026.