Why DMARC should top your MSP roadmap in 2025

Jack Lilley

Executive summary: Email remains the easiest way for criminals to reach customers, and major mailbox providers have decided that unauthenticated mail is no longer welcome. Google and Yahoo started rejecting bulk messages without DMARC in early 2024, and Microsoft 365 will follow in 2025. Yet only 9.7% of the world’s 73 million active domains…