Show HN: Free DMARC Checker – Verify your domain meets sender requirements (sidemail.io)
Mailbox providers are tightening up sender requirements for authentication, making DMARC crucial for bulk sending.
I made a DMARC validator where you can check out whether your setup is valid or needs any improvements.
It looks up _dmarc.<domain>, parses the TXT record, and displays policy (p/sp), alignment (adkim/aspf), reporting (rua/ruf), and options like pct, fo, ri, etc. It also gives you useful recommendations about your DMARC and helps you resolve potential issues.
It’s free and no sign-up.
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