Permanent Message Header Field Names

Registry Name: Permanent Message Header Field Names
Reference: [RFC3864]
Registration Procedures: Expert Review

 

Header Field Name	Protocol	Status	Reference
A-IM	http		[RFC4229]
Accept	http		[RFC4229]
Accept-Additions	http		[RFC4229]
Accept-Charset	http		[RFC4229]
Accept-Encoding	http		[RFC4229]
Accept-Features	http		[RFC4229]
Accept-Language	http		[RFC4229]
Accept-Language	mail		[RFC4021]
Accept-Ranges	http		[RFC4229]
Age	http		[RFC4229]
Allow	http		[RFC4229]
Also-Control	netnews	obsoleted	[Son-of-1036]
Alternate-Recipient	mail		[RFC4021]
Alternates	http		[RFC4229]
Apply-To-Redirect-Ref	http		[RFC4437]
Approved	netnews	standard	[RFC-ietf-usefor-usefor-12.txt]
Archive	netnews	standard	[RFC-ietf-usefor-usefor-12.txt]
Archived-At	mail	standard	[RFC5064]
Archived-At	netnews	standard	[RFC5064]
Article-Names	netnews	obsoleted	[Son-of-1036]
Article-Updates	netnews	obsoleted	[Son-of-1036]
Authentication-Info	http		[RFC4229]
Authorization	http		[RFC4229]
Auto-Submitted	mail	standard	[RFC3834] (section 5)
Autoforwarded	mail		[RFC4021]
Autosubmitted	mail		[RFC4021]
Bcc	mail	standard	[RFC5322]
C-Ext	http		[RFC4229]
C-Man	http		[RFC4229]
C-Opt	http		[RFC4229]
C-PEP	http		[RFC4229]
C-PEP-Info	http		[RFC4229]
Cache-Control	http		[RFC4229]
Cc	mail	standard	[RFC5322]
Comments	mail	standard	[RFC5322]
Comments	netnews	standard	[RFC-ietf-usefor-usefor-12.txt][RFC2822]
Connection	http		[RFC4229]
Content-Alternative	MIME		[RFC4021]
Content-Base	http		[RFC4229]
Content-Base	MIME		[RFC4021]
Content-Description	MIME		[RFC4021]
Content-Disposition	http		[RFC4229]
Content-Disposition	MIME		[RFC4021]
Content-Duration	MIME		[RFC4021]
Content-Encoding	http		[RFC4229]
Content-features	MIME		[RFC4021]
Content-ID	http		[RFC4229]
Content-ID	MIME		[RFC4021]
Content-Identifier	mail		[RFC4021]
Content-Language	http		[RFC4229]
Content-Language	MIME		[RFC4021]
Content-Length	http		[RFC4229]
Content-Location	http		[RFC4229]
Content-Location	MIME		[RFC4021]
Content-MD5	http		[RFC4229]
Content-MD5	MIME		[RFC4021]
Content-Range	http		[RFC4229]
Content-Return	mail		[RFC4021]
Content-Script-Type	http		[RFC4229]
Content-Style-Type	http		[RFC4229]
Content-Transfer-Encoding	MIME		[RFC4021]
Content-Type	http		[RFC4229]
Content-Type	MIME		[RFC4021]
Content-Version	http		[RFC4229]
Control	netnews	standard	[RFC-ietf-usefor-usefor-12.txt]
Conversion	mail		[RFC4021]
Conversion-With-Loss	mail		[RFC4021]
Cookie	http		[RFC4229]
Cookie2	http		[RFC4229]
DASL	http	standard	[RFC5323]
DAV	http		[RFC4229][RFC4918]
DL-Expansion-History	mail		[RFC4021]
Date	http		[RFC4229]
Date	mail	standard	[RFC5322]
Date	netnews	standard	[RFC-ietf-usefor-usefor-12.txt][RFC2822]
Date-Received	netnews	obsleted	[RFC0850]
Default-Style	http		[RFC4229]
Deferred-Delivery	mail		[RFC4021]
Delivery-Date	mail		[RFC4021]
Delta-Base	http		[RFC4229]
Depth	http		[RFC4229][RFC4918]
Derived-From	http		[RFC4229]
Destination	http		[RFC4229][RFC4918]
Differential-ID	http		[RFC4229]
Digest	http		[RFC4229]
Discarded-X400-IPMS-Extensions	mail		[RFC4021]
Discarded-X400-MTS-Extensions	mail		[RFC4021]
Disclose-Recipients	mail		[RFC4021]
Disposition-Notification-Options	mail		[RFC4021]
Disposition-Notification-To	mail		[RFC4021]
Distribution	netnews	standard	[RFC-ietf-usefor-usefor-12.txt]
DKIM-Signature	mail	standard	[RFC4871]
Encoding	mail		[RFC4021]
Encrypted	mail		[RFC4021]
ETag	http		[RFC4229]
Expect	http		[RFC4229]
Expires	http		[RFC4229]
Expires	mail		[RFC4021]
Expires	netnews	standard	[RFC-ietf-usefor-usefor-12.txt]
Expiry-Date	mail		[RFC4021]
Ext	http		[RFC4229]
Followup-To	netnews	standard	[RFC-ietf-usefor-usefor-12.txt]
From	http		[RFC4229]
From	mail	standard	[RFC5322]
From	netnews	standard	[RFC-ietf-usefor-usefor-12.txt][RFC2822]
Generate-Delivery-Report	mail		[RFC4021]
GetProfile	http		[RFC4229]
Host	http		[RFC4229]
IM	http		[RFC4229]
If	http		[RFC4229][RFC4918]
If-Match	http		[RFC4229]
If-Modified-Since	http		[RFC4229]
If-None-Match	http		[RFC4229]
If-Range	http		[RFC4229]
If-Unmodified-Since	http		[RFC4229]
Importance	mail		[RFC4021]
In-Reply-To	mail	standard	[RFC5322]
Incomplete-Copy	mail		[RFC4021]
Injection-Date	netnews	standard	[RFC-ietf-usefor-usefor-12.txt]
Injection-Info	netnews	standard	[RFC-ietf-usefor-usefor-12.txt]
Keep-Alive	http		[RFC4229]
Keywords	mail	standard	[RFC5322]
Keywords	netnews	standard	[RFC-ietf-usefor-usefor-12.txt][RFC2822]
Label	http		[RFC4229]
Language	mail		[RFC4021]
Last-Modified	http		[RFC4229]
Latest-Delivery-Time	mail		[RFC4021]
Lines	netnews	deprecated	[RFC-ietf-usefor-usefor-12.txt][RFC3977]
Link	http		[RFC4229]
List-Archive	mail		[RFC4021]
List-Help	mail		[RFC4021]
List-ID	mail		[RFC4021]
List-Owner	mail		[RFC4021]
List-Post	mail		[RFC4021]
List-Subscribe	mail		[RFC4021]
List-Unsubscribe	mail		[RFC4021]
Location	http		[RFC4229]
Lock-Token	http		[RFC4229][RFC4918]
Man	http		[RFC4229]
Max-Forwards	http		[RFC4229]
Message-Context	mail		[RFC4021]
Message-ID	mail	standard	[RFC5322]
Message-ID	netnews	standard	[RFC-ietf-usefor-usefor-12.txt][RFC2822]
Message-Type	mail		[RFC4021]
Meter	http		[RFC4229]
MIME-Version	http		[RFC4229]
MIME-Version	MIME		[RFC4021]
Negotiate	http		[RFC4229]
Newsgroups	netnews	standard	[RFC-ietf-usefor-usefor-12.txt]
NNTP-Posting-Date	netnews	obsoleted	[None]
NNTP-Posting-Host	netnews	obsoleted	[RFC2980]
Obsoletes	mail		[RFC4021]
Opt	http		[RFC4229]
Organization	netnews	standard	[RFC-ietf-usefor-usefor-12.txt]
Original-Encoded-Information-Types	mail		[RFC4021]
Original-Message-ID	mail		[RFC4021]
Original-Recipient	mail	standard	[RFC3798][RFC5337]
Originator-Return-Address	mail		[RFC4021]
Overwrite	http		[RFC4229][RFC4918]
P3P	http		[RFC4229]
Path	netnews	standard	[RFC-ietf-usefor-usefor-12.txt]
PEP	http		[RFC4229]
PICS-Label	http		[RFC4229]
PICS-Label	mail		[RFC4021]
Pep-Info	http		[RFC4229]
Posting-Version	netnews	obsoleted	[RFC0850]
Pragma	http		[RFC4229]
Prevent-NonDelivery-Report	mail		[RFC4021]
Priority	mail		[RFC4021]
ProfileObject	http		[RFC4229]
Protocol	http		[RFC4229]
Protocol-Info	http		[RFC4229]
Protocol-Query	http		[RFC4229]
Protocol-Request	http		[RFC4229]
Proxy-Authenticate	http		[RFC4229]
Proxy-Authentication-Info	http		[RFC4229]
Proxy-Authorization	http		[RFC4229]
Proxy-Features	http		[RFC4229]
Proxy-Instruction	http		[RFC4229]
Public	http		[RFC4229]
Range	http		[RFC4229]
Received	mail	standard	[RFC5322][RFC5321]
Received-SPF	mail		[RFC4408]
Redirect-Ref	http		[RFC4437]
References	mail	standard	[RFC5322]
References	netnews	standard	[RFC-ietf-usefor-usefor-12.txt][RFC2822]
Referer	http		[RFC4229]
Relay-Version	netnews	obsoleted	[RFC0850]
Reply-By	mail		[RFC4021]
Reply-To	mail	standard	[RFC5322]
Reply-To	netnews	standard	[RFC-ietf-usefor-usefor-12.txt][RFC2822]
Resent-Bcc	mail	standard	[RFC5322]
Resent-Cc	mail	standard	[RFC5322]
Resent-Date	mail	standard	[RFC5322]
Resent-From	mail	standard	[RFC5322]
Resent-Message-ID	mail	standard	[RFC5322]
Resent-Reply-To	mail	obsoleted	[RFC5322]
Resent-Sender	mail	standard	[RFC5322]
Resent-To	mail	standard	[RFC5322]
Retry-After	http		[RFC4229]
Return-Path	mail	standard	[RFC5322]
Safe	http		[RFC4229]
Security-Scheme	http		[RFC4229]
See-Also	netnews	obsoleted	[Son-of-1036]
Sender	mail	standard	[RFC5322]
Sender	netnews	standard	[RFC-ietf-usefor-usefor-12.txt][RFC2822]
Sensitivity	mail		[RFC4021]
Server	http		[RFC4229]
Set-Cookie	http		[RFC4229]
Set-Cookie2	http		[RFC4229]
SetProfile	http		[RFC4229]
SLUG	http	standard	[RFC5023]
SoapAction	http		[RFC4229]
Solicitation	mail		[RFC3865]
Status-URI	http		[RFC4229]
Subject	mail	standard	[RFC5322]
Subject	netnews	standard	[RFC-ietf-usefor-usefor-12.txt][RFC2822]
Summary	netnews	standard	[RFC-ietf-usefor-usefor-12.txt]
Supersedes	mail		[RFC4021]
Supersedes	netnews	standard	[RFC-ietf-usefor-usefor-12.txt][RFC2156]
Surrogate-Capability	http		[RFC4229]
Surrogate-Control	http		[RFC4229]
TCN	http		[RFC4229]
TE	http		[RFC4229]
Timeout	http		[RFC4229][RFC4918]
To	mail	standard	[RFC5322]
Trailer	http		[RFC4229]
Transfer-Encoding	http		[RFC4229]
URI	http		[RFC4229]
Upgrade	http		[RFC4229]
User-Agent	http		[RFC4229]
User-Agent	netnews	standard	[RFC-ietf-usefor-usefor-12.txt][RFC2616]
Variant-Vary	http		[RFC4229]
Vary	http		[RFC4229]
Via	http		[RFC4229]
WWW-Authenticate	http		[RFC4229]
Want-Digest	http		[RFC4229]
Warning	http		[RFC4229]
X400-Content-Identifier	mail		[RFC4021]
X400-Content-Return	mail		[RFC4021]
X400-Content-Type	mail		[RFC4021]
X400-MTS-Identifier	mail		[RFC4021]
X400-Originator	mail		[RFC4021]
X400-Received	mail		[RFC4021]
X400-Recipients	mail		[RFC4021]
X400-Trace	mail		[RFC4021]
Xref	netnews	standard	[RFC-ietf-usefor-usefor-12.txt]

 

Page updated 2008-11-17
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