2025 in Email: The Year Authentication Became Mandatory Everywhere
Microsoft joined the mandate, Gmail moved to hard rejection, and DMARCbis reached the finish line. What 2025 changed for senders and what it sets up for 2026.
6 articles with this tag
Microsoft joined the mandate, Gmail moved to hard rejection, and DMARCbis reached the finish line. What 2025 changed for senders and what it sets up for 2026.
Postmaster Tools, SNDS, FBLs, DMARC reports, TLS-RPT, bounce logs, engagement data: the full observability stack, what each layer catches, and the alerts worth paging on.
DMARCbis is finishing its journey through the IETF, replacing RFC 7489 with a Standards Track spec. The tree walk, retired tags, and what senders should do now.
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.
The NIS2 directive makes email authentication and transport security a regulatory matter for thousands of EU organizations. What it requires and where email fits.
RUA reports arrive as gzipped XML that nobody reads by hand. The report anatomy, a working parsing pipeline, and how to interpret the sources you will find.