Internet Assigned Numbers Authority

DomainKeys Identified Mail (DKIM) Parameters

Created
2007-03-08
Last Updated
2018-07-06
Available Formats

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Registries included below

DKIM Signature Tag Specifications

Registration Procedure(s)
IETF Review
Reference
[RFC6376]
Available Formats

CSV
Type Reference Status
v [RFC6376] active
a [RFC6376] active
b [RFC6376] active
bh [RFC6376] active
c [RFC6376] active
d [RFC6376] active
h [RFC6376] active
i [RFC6376] active
l [RFC6376] active
q [RFC6376] active
s [RFC6376] active
t [RFC6376] active
x [RFC6376] active
z [RFC6376] active
atps [RFC6541] active
atpsh [RFC6541] active
r [RFC6651] active

DKIM-Signature Query Method

Registration Procedure(s)
IETF Review
Reference
[RFC6376]
Available Formats

CSV
Type Option Reference Status
dns txt [RFC6376] active

DKIM-Signature Canonicalization Header

Registration Procedure(s)
IETF Review
Reference
[RFC6376]
Available Formats

CSV
Type Reference Status
simple [RFC6376] active
relaxed [RFC6376] active

DKIM-Signature Canonicalization Body

Registration Procedure(s)
IETF Review
Reference
[RFC6376]
Available Formats

CSV
Type Reference Status
simple [RFC6376] active
relaxed [RFC6376] active

_domainkey DNS TXT Record Tag Specifications

Registration Procedure(s)
IETF Review
Reference
[RFC6376]
Available Formats

CSV
Type Reference Status
v [RFC6376] active
g [RFC4871] historic
h [RFC6376] active
k [RFC6376] active
n [RFC6376] active
p [RFC6376] active
s [RFC6376] active
t [RFC6376] active

DKIM Key Type

Registration Procedure(s)
IETF Review
Reference
[RFC6376]
Available Formats

CSV
Type Reference Status
rsa [RFC8017] active
ed25519 [RFC8032] active

DKIM Hash Algorithms

Registration Procedure(s)
IETF Review
Reference
[RFC6376]
Available Formats

CSV
Type Reference Status
sha1 [RFC6376][RFC8301] historic
sha256 [FIPS-180-3-2008] active

DKIM Service Types

Registration Procedure(s)
IETF Review
Reference
[RFC6376]
Available Formats

CSV
Type Reference Status
email [RFC6376] active
* [RFC6376] active

DKIM Selector Flags

Registration Procedure(s)
IETF Review
Reference
[RFC6376]
Available Formats

CSV
Type Reference Status
y [RFC6376] active
s [RFC6376] active

Authorized Third-Party Signature (ATPS) Tag Registry

Registration Procedure(s)
Specification Required
Expert(s)
Unassigned
Reference
[RFC6541]
Available Formats

CSV
Tag Reference Status
d [RFC6541] active
v [RFC6541] active

DKIM Reporting Tag Registry

Registration Procedure(s)
Specification Required
Expert(s)
Unassigned
Reference
[RFC6651]
Available Formats

CSV
Tag Reference Status
ra [RFC6651] active
rp [RFC6651] active
rr [RFC6651] active
rs [RFC6651] active