Forum Discussion
Incorrect processing of messages with multiple DKIM signatures?
Hello, I've been noticing strange behavior on our Exchange online where legitimately spoofed incoming messages that are double signed (Usually one unaligned DKIM signature for the sending infr...
Bump. Just noticed this today. Client has 2 signatures and DMARC is being evaluated under the non-aligned signature. Appears to only affect Microsoft recipients.
I have the same exact problem.
Is there any way to report this to someone who can fix this? Otherwise the only option I'm left with is setting the DMARC policy to "ignore".
Marco_Meieris right, your record for dmarc is incorrect, just doing a search for your dmarc records on dmarcian.com shows the below;
perhaps correct it?
Once, I analysed the same issue with multiple DKIM Signatures. First, I thought it is an bug in EOP but second, I figured out an invalid dmarc record from one of the dkim signatures. Corrected, solved 🙂
Your dmarc record for udobaer.de is invalid. "ignore" is not a valid value for Tag "p"
I suggest to open a Support Case.
Genius. What an insightful suggestion.
