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6. IANA Considerations

This document updates the registrations that appeared in [RFC4021] that referred to the definitions in [RFC2822]. IANA has updated the Permanent Message Header Field Repository with the following header fields, in accordance with the procedures set out in [RFC3864].

Header field name:  Date
Applicable protocol:  Mail
Status:  standard
Author/Change controller:  IETF
Specification document(s):  This document (section 3.6.1)

Header field name:  From
Applicable protocol:  Mail
Status:  standard
Author/Change controller:  IETF
Specification document(s):  This document (section 3.6.2)

Header field name:  Sender
Applicable protocol:  Mail
Status:  standard
Author/Change controller:  IETF
Specification document(s):  This document (section 3.6.2)

Header field name:  Reply-To
Applicable protocol:  Mail
Status:  standard
Author/Change controller:  IETF
Specification document(s):  This document (section 3.6.2)

Header field name:  To
Applicable protocol:  Mail
Status:  standard
Author/Change controller:  IETF
Specification document(s):  This document (section 3.6.3)

Header field name:  Cc
Applicable protocol:  Mail
Status:  standard
Author/Change controller:  IETF
Specification document(s):  This document (section 3.6.3)

Header field name:  Bcc
Applicable protocol:  Mail
Status:  standard
Author/Change controller:  IETF
Specification document(s):  This document (section 3.6.3)

Header field name:  Message-ID
Applicable protocol:  Mail
Status:  standard
Author/Change controller:  IETF
Specification document(s):  This document (section 3.6.4)

Header field name:  In-Reply-To
Applicable protocol:  Mail
Status:  standard
Author/Change controller:  IETF
Specification document(s):  This document (section 3.6.4)

Header field name:  References
Applicable protocol:  Mail
Status:  standard
Author/Change controller:  IETF
Specification document(s):  This document (section 3.6.4)

Header field name:  Subject
Applicable protocol:  Mail
Status:  standard
Author/Change controller:  IETF
Specification document(s):  This document (section 3.6.5)

Header field name:  Comments
Applicable protocol:  Mail
Status:  standard
Author/Change controller:  IETF
Specification document(s):  This document (section 3.6.5)

Header field name:  Keywords
Applicable protocol:  Mail
Status:  standard
Author/Change controller:  IETF
Specification document(s):  This document (section 3.6.5)

Header field name:  Resent-Date
Applicable protocol:  Mail
Status:  standard
Author/Change controller:  IETF
Specification document(s):  This document (section 3.6.6)

Header field name:  Resent-From
Applicable protocol:  Mail
Status:  standard
Author/Change controller:  IETF
Specification document(s):  This document (section 3.6.6)

Header field name:  Resent-Sender
Applicable protocol:  Mail
Status:  standard
Author/Change controller:  IETF
Specification document(s):  This document (section 3.6.6)

Header field name:  Resent-To
Applicable protocol:  Mail
Status:  standard
Author/Change controller:  IETF
Specification document(s):  This document (section 3.6.6)

Header field name:  Resent-Cc
Applicable protocol:  Mail
Status:  standard
Author/Change controller:  IETF
Specification document(s):  This document (section 3.6.6)

Header field name:  Resent-Bcc
Applicable protocol:  Mail
Status:  standard
Author/Change controller:  IETF
Specification document(s):  This document (section 3.6.6)

Header field name:  Resent-Reply-To
Applicable protocol:  Mail
Status:  obsolete
Author/Change controller:  IETF
Specification document(s):  This document (section 4.5.6)

Header field name:  Resent-Message-ID
Applicable protocol:  Mail
Status:  standard
Author/Change controller:  IETF
Specification document(s):  This document (section 3.6.6)

Header field name:  Return-Path
Applicable protocol:  Mail
Status:  standard
Author/Change controller:  IETF
Specification document(s):  This document (section 3.6.7)

Header field name:  Received
Applicable protocol:  Mail
Status:  standard
Author/Change controller:  IETF
Specification document(s):  This document (section 3.6.7)
Related information:  [RFC5321]