DKIM verification failures (DNS timeout suspected)

Walter Russo walter at secureme.it
Fri Apr 3 13:00:58 UTC 2026


Hello everyone,

I’ve been experiencing an issue recently related to DKIM verification by
Microsoft 365 and Aruba.

According to the DMARC reports I receive from these two providers, DKIM
signatures are not being validated by their systems. However, other
providers do not show any such errors.

I’m trying to understand whether this is an issue specific to my setup or
if others are encountering similar problems.

Any feedback or shared experiences would be greatly appreciated.

Thanks in advance.

Best regards

Walter Russo
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