Hello List,
For quite some time I am noticing DKIM temperrors in DMARC reports
(exclusively) from Microsoft. Until today I wasn't able to track down
whatever is causing this:
If a DKIM selector is a CNAME pointing to a 1024 bit key it returns a
DKIM "pass". But if the selector points to a 2048 bit key it returns a
DKIM "temperror".
My test setup:
2016Q2-1024._domainkey.simonliebold.de => dkim=pass
2016Q2._domainkey.simonliebold.de => dkim=temperror
I am wondering if anyone spotted this in the DMARC reports from Microsoft.
Simon
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