John Levine wrote:
> An acquaintance at a largish government agency which is sometimes a
> phish target is trying to persuade the local powers that be that it
> would be a good idea to DKIM sign their outgoing mail.
> 
> Since no government agency wants to be the first to do anything, do we
> know of other agencies that sign or verify with DKIM?

Made a quick search through about 1000 distinct non-spam signing
domains that sent us more than 5 messages during the last two months,
and I could only recognize two:

  d=govtlab.gov.hk, http://www.govtlab.gov.hk/english/home.htm
  d=serpro.gov.br,  http://www.serpro.gov.br/instituicao/quem

> For that matter, are there any reasonably good lists of significant
> signers or verifiers?

I have a list of about 40 DKIM (or DK) signing domains of universities,
faculties and some academic/research institutes which I use for mild
whitelisting (just in case) based on their valid signature. Perhaps
the list could be used in courtesy listings at dwl.spamhaus.org, or
maybe some less black & white form of a reputation DNS list could
be introduced at spamhaus.org.

> I know about Google, Yahoo, and Paypal, but I
> was hoping for a longer list.

I can send you a top-100 (or more) list of signing domains, based on
the number of messages we receive, if you are interested.

  Mark
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