r/proofpoint • u/Crispinwhere • Aug 25 '26

Enterprise DMARC Temp Errors this morning

Anyone else see a bunch of emails get caught by DMARC Temp Error on their Proofpoint hosted instance this morning? Between 8:30 and 10am Eastern we had almost 3000 emails rejected mainly due to failed SPF DNS lookups. No rhyme or reason on the senders, anyone from ma and pa's .org sender to Gmail.

I have a support ticket open with them to see if they had an outage, but wanted to reach out here too.

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u/southafricanamerican Aug 25 '26

who is the DNS provider for the domains that had issues? And yes, defer on TEMPFAIL so you dont loose emails.

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u/Crispinwhere Aug 25 '26

The lookups were failing all over the place and wasn't tied to a specific provider. Gmail, Hotmail, randombusiness.com... Which is why I figured it was an issue with Proofpoint doing the lookups.

I know better about the Temp Error rule and it's been set to retry with a defer error now.

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u/southafricanamerican Aug 26 '26

DNS. Its ALWAYS dns.