SPF Record Syntax: Mechanisms, Qualifiers, Modifiers, and Macros1by Hacker News1d agodmarcguard.io fmode.me/n/spf-record-syntax-mechanisms-qualifiers-modifiers-and-macros Read the full article https://dmarcguard.io/blog/spf-record-syntax/More from FM NewsThe Download: reward hacking explained, and suspected Iranian cyberattacks1 pts · MIT Tech ReviewAlienware 27 QD-OLED (AW2726DM) Review: A $350 Winner1 pts · Wired[object Object]1 pts · The VergeBest Robot Lawn Mowers (2026): My Picks After 3 Years of Testing1 pts · Wired Back to FM News