Microsoft Boosts Email Sender Rules for Outlook
ID: a0cda08e-62ad-5aad-bdeb-346092743f9a
STIX ID: report--a0cda08e-62ad-5aad-bdeb-346092743f9a
Feed Name: Dark Reading
*Microsoft announced new requirements for high-volume email senders (over 5,000 messages/day) to implement SPF, DKIM, and DMARC, with enforcement starting May 5, 2025 (messages from non‑compliant domains will be routed to Junk initially and rejected later). The policy applies to Outlook.com consumer domains (hotmail.com, live.com, outlook.com) and Microsoft also recommended sender hygiene practices such as valid From/Reply‑To addresses, clear unsubscribe links, list hygiene, bounce management, and transparent mailing practices.*
Your team is not currently subscribed to this feed. You must subscribe to it in order to see this post.