SMTP MTA Strict Transport Security (MTA-STS)

Created
2018-06-21
Last Updated
2018-09-28
Available Formats

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Registries included below

MTA-STS TXT Record Fields

Registration Procedure(s)
Expert Review
Expert(s)
Unassigned
Reference
[RFC8461]
Available Formats

CSV
Field Name Description Reference
v Record version [RFC8461, Section 3.1]
id Policy instance ID [RFC8461, Section 3.1]

MTA-STS Policy Fields

Registration Procedure(s)
Expert Review
Expert(s)
Unassigned
Reference
[RFC8461]
Available Formats

CSV
Field Name Description Reference
version Policy version [RFC8461, Section 3.2]
mode Enforcement behavior [RFC8461, Section 3.2]
max_age Policy lifetime [RFC8461, Section 3.2]
mx MX identities [RFC8461, Section 3.2]