On 13/08/2026 5:37 am, Grove, Matthew wrote:
I have a question about a category of sender that I have not seen
addressed directly in these discussions.
Under the 2024 Google/Yahoo bulk sender rollout, senders sending at
~5k messages per day or more were required to publish a DMARC record
and to satisfy DKIM alignment with their 5322.From domain. In our
data, roughly 20% of senders above that volume have not completed the
required DNS changes, even two years later. These are small business
owners who are not refusing to comply. Some do not understand what is
being asked of them. Others cannot make the change themselves: their
site is on one platform and their DNS is on another, a web developer
or agency holds the credentials, or the hosting platform's UI does not
expose the records our instructions describe.
What solutions will be available to these senders under DKIM2?
There is essentially no change with DKIM2 as it reuses the same keys and
has the same requirements.
The number of records required may reduce slightly as many ESPs ask
users to create CNAME records for bounce handling. That would no longer
be necessary as the Chain of Custody would ensure the ESP always saw the
bounce.
Regards,
R. Latimer
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