For those of you that are new to the email security subject, you've probably heard about SPF, DKIM, and DMARC. But what are they, and how do they relate to each other? Like regular postal mail, someone could send you a letter in an envelope and forge the sender's name

DMARC, SPF, and DKIM have been around for more than eight years now. Every day, more domains adopt this mechanism to increase email deliverability and protect against email spoofing and phishing attacks. The "R" in DMARC stands for Reporting, and it is one of the great features of DMARC. Email

Microsoft has started sending DMARC aggregate reports, but unfortunately they don't know how to format a proper email.

Sometimes your site has to rely on content from other sources. With Document Policies, you have more control over the embedded documents. Let’s have a quick look at this new Feature Policy extension.

After analyzing millions of DMARC reports, I came to the disappointing conclusion that only a fraction of them comply with the DMARC IETF RFC guidelines. Most of them lack mandatory elements or hold incorrect element values.

The most common mechanisms for securing email explained (SPF, DKIM, DMARC, ARC, DANE, MTA-STS, STARTTLS Everywhere, and TLS-RPT).