What is SPF (Sender Policy Framework)
SPF is an email authentication mechanism designed to fight email spoofing and phishing attacks (to understand phishing attacks please refer to this post). SPF is defined in RFC 7208. The …
What is DKIM (DomainKeys Identified Mail)?
DKIM, or DomainKeys Identified Mail, is a protocol used to authenticate email in order to combat mail spoofing and phishing attacks. For a more detailed description of phishing attacks please …
RFC 5321 and RFC 5322
It’s important to have a basic understanding of RFC 5321 and RFC 5322 to fully understand DMARC, DKIM and SPF. These two RFC’s describe different types of sender information and …
Using DMARC and SPF Without DKIM
Using DMARC to validate your SPF record makes perfect sense even if you have no plan of implementing DKIM. There you have it! Although implementing DKIM is highly recommended you …
DMARC Explained
Anyone involved with managing Office 365 or other mail systems should definitely have a look at DMARC. DMARC stands for “Domain-based Message Authentication, Reporting and Conformance” and is built upon …