From May 5, 2025, Outlook will require high-volume email senders (over 5,000 emails daily) to implement SPF, DKIM, and DMARC. Initially, non-compliant emails will go to the junk folder and may eventually be rejected if issues persist.
DMARC is now mandatory if you send emails to Outlook, Live, and Hotmail Email Addresses
Hi all,
FYI :
Mandatory Rule After May 5, 2025 :
For domains sending over 5,000 emails per day, Outlook will require compliance with SPF, DKIM, and DMARC.
Non-compliant messages will initially be ...
