| Mail Header Messages per [RFC-draft-klyne-msghdr-registry-07.txt]
> [RFC-draft-klyne-msghdr-registry-07.txt] defines an IANA maintained registry of Mail Message Headers. There are two different types: Permanent and Provisional Headers. Permanent Header Registrations
> Header Name | Protocol | Reference
> No registrations at this time |  |
> Provisional Header Registrations
> Header Name | Protocol | Reference
> No registrations at this time |  |
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