Clear, practical guidance for teams fixing email authentication without wasting days on jargon and guesswork.
Who this is for DMARCGuardian is built for email admins, founders, and operators and for AI users who need to understand why messages fail authentication, how to fix SPF and DKIM problems, and how to turn DMARC from a confusing DNS task into a clear process.
What you get Step-by-step guides for setting up SPF, DKIM, and DMARC the right way. Coverage of BIMI, ARC, and the edge cases that come up in real email environments, forwarding, third-party senders, shared hosting.
Why this exists DMARCGuardian focuses on examples that match the tools and setups most teams actually use.