Quick answer: DMARC is a small text record you publish in your domain’s DNS that tells receiving mail servers what to do if a message claiming to be from your domain fails SPF or DKIM checks. It does three things: it authenticates your outbound mail, it tells receivers how to handle failures (ignore, junk, or […] The post What is DMARC? A practical guide for anyone sending real email in 2026 appeared first on SMTP2GO .
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