I heartily endorse the idea of closing useless registries.

Bron.

On Tue, Aug 25, 2026, at 13:59, Richard Clayton wrote:
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> If you read RFC6376 (DKIM1) you will see that a number of pages are
> spent instructing IANA to set up registries
> 
>    7.  IANA Considerations  . . . . . . . . . . . . . . . . . . . . . 51
>      7.1.  Email Authentication Methods Registry  . . . . . . . . . . 51
>      7.2.  DKIM-Signature Tag Specifications  . . . . . . . . . . . . 51
>      7.3.  DKIM-Signature Query Method Registry . . . . . . . . . . . 52
>      7.4.  DKIM-Signature Canonicalization Registry . . . . . . . . . 52
>      7.5.  _domainkey DNS TXT Resource Record Tag Specifications  . . 53
>      7.6.  DKIM Key Type Registry . . . . . . . . . . . . . . . . . . 53
>      7.7.  DKIM Hash Algorithms Registry  . . . . . . . . . . . . . . 54
>      7.8.  DKIM Service Types Registry  . . . . . . . . . . . . . . . 54
>      7.9.  DKIM Selector Flags Registry . . . . . . . . . . . . . . . 55
>      7.10. DKIM-Signature Header Field  . . . . . . . . . . . . . . . 55
> 
> with the exception of adding an elliptic curve key type these registries
> contain the same information today as 15 years ago ...
> 
> ... this leads to the conclusion that these registries serve no
> practical purpose (you can get more information from reading RFC6376 and
> (although there is little evidence anyone has read it) RFC8463
> 
> I therefore suggest that we do not bother with IANA registries for DKIM2
> and in the fullness of time, when we write an RFC to move DKIM1 to
> historic, we close them at the same time...   or we could close them to
> new entries now (albeit if no-one looks at them, it's probably not worth
> bothering to do that).
> 
> If we agree on this I can remove a TBA from the next version of the spec
> 
> - -- 
> richard @ highwayman . com                       "Nothing seems the same
>                           Still you never see the change from day to day
>                                 And no-one notices the customs slip away"
> 
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--
  Bron Gondwana, CEO, Fastmail Pty Ltd / Fastmail US LLC
  [email protected]

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