Hi,
is there a way to know that a query has already been tried a few minutes ago,
and failed?
It happens seldomly, but sometimes the DKIM mail filter gets a SERVFAIL when it
tries to authenticate an incoming message. SERVFAIL occurs when DNSSEC check
fails. Trying again is useless, it has to be treated as a permanent error.
Any idea about how to tell a really temporary error?
Best
Ale
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