Microsoft's New Outlook Sender Requirements: A Compliance Guide
Microsoft now requires SPF, DKIM, and DMARC from high-volume senders to Outlook consumer domains. What the rules demand, how enforcement works, and how to comply.
3 articles with this tag
Microsoft now requires SPF, DKIM, and DMARC from high-volume senders to Outlook consumer domains. What the rules demand, how enforcement works, and how to comply.
Switching email providers resets your IPs, your DKIM keys, and every provider assumption about your traffic. A migration plan that carries your reputation across.
A DKIM signature stays valid no matter who forwards the message. How replay attacks abuse that property to spend your reputation, and the defenses that limit the damage.