#Cybersecurity #DMARC #Microsoft #ComplianceRegulations #EmailSecurity Microsoft has announced its new requirements for high-volume senders on April 2, 2025. These rules will be enforced from May 5, 2025. In this video, our Chief Operations Officer, Kieran Frost, discusses who’s classified as a high-volume sender, what the new requirements mean for them, as well as the problem with email and DMARC’s role in solving it. He also highlights how we can help your business implement DMARC and the urgency of compliance. Takeaways include: - Microsoft has defined high-volume senders as organizations sending over 5 000 emails per day to , , and domains. - The email provider requires high-volume senders to pass an SPF or DKIM check and have a published DMARC record. - If companies’ communications don’t meet the outlined requirements, their messages will be sent to Junk folders and, at a later stage, rejected. - This update mirrors Google’s and Yahoo’s DMARC mandates for bulk senders from October 3, 2023, reflecting a growing shift toward stricter email security standards. Want to dive deeper into this update? Kieran’s also written an article on Microsoft’s announcement: Curious to find out how we make DMARC implementation and management effortless for your organization? Book a demo with us: Or jump right in and get started with a free trial: