What does this finding mean?
Sending systems receive no MTA-STS transport policy.
MTA-STS result code
MTA-STS is not configured
mta.not_configured
What is the next step?
Set up the HTTPS policy and TXT announcement in a safe order.
Please note: The result code describes a technical measurement, not a guarantee of delivery, security or legal compliance.
Content reviewed on 20.08.2026.