Re: [exim] Intermittent PDKIM failed key import errors

On 03/07/2020 13:24, Richard Gilbert via Exim-users wrote:
> failed key import

... means either the dns lookup failed, or the results
were not parseable. Either way, catching one in the
act seems required. It won't be easy.

You could set up a conditional debug log, using ACL control=debug
and =debug/kill.
You might be able to do something complex with packet captures.
--
Cheers,
Jeremy