Email Security

Sender Policy Framework (SPF) is an email authentication method designed to detect forging sender addresses during the delivery of the email. SPF alone, though, is limited only to detect a forged sender claimed in the envelope of the email which is used when the mail gets bounced. Only in combination with DMARC can it be used to detect the forging of the visible sender in emails (email spoofing), a technique often used in phishing and [...]

DMARC stands for Domain-based Message Authentication, Reporting & Conformance, and is a protocol that uses Sender Policy Framework, (SPF)  and DomainKeys identified mail (DKIM) to determine the authenticity of an email message. DMARC is a way to make it easier for email senders and receivers to determine whether or not a given message is legitimately from the sender, and what to do if it isn’t. This makes it easier to identify spam and phishing messages, [...]