Blog Post
Strengthening Email Ecosystem: Outlook’s New Requirements for High‐Volume Senders
I can totally relate to this table, i have not seen any issues with gmail/google generating temperrors. The question i still dont have answer of is if these emails will be rejected or not. Perhaps ill soon get the reports from our service to see bounce rates. But no one from MS is willing to give an answer. The outlook.com support is useless, they keep on asking for same things no matter what your issue description is.
Yes, they would be rejected, assuming they met Microsoft's bulk sender definition. It's also possible for emails that do not meet this criteria to be rejected due to the same problem, because with a strict policy of DMARC reject, SPF not passing, and DKIM returning temperror (which is not a pass result), it would not satisfy DMARC.
- Gagan3496Jul 10, 2025Copper Contributor
In the case I am describing, SPF passes with alignment, hence DMARC passes but DKIM has temperror. I understand if you are saying temperror is considered fail and hence according to new rules, even though what i mentioned in the previous line, mails will be rejected.