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Blacklist Checker

Check domains and IPs against major lists.

How it works

Mail host DNSbL snapshot

Resolves MX → A records, then checks Spamhaus ZEN, SpamCop, and Barracuda. Snapshot only — always confirm on the list operator’s site.

Or start from a real-life example

Results appear here after you click Check reputation.

Reputation matters for API sends. Authenticate with MailShrine Developer API and keep complaint rates low.

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