Blacklist Checker – DNSBL check

Check whether your mail server IP address is listed in major DNSBL/Blacklist databases (Spamhaus, Barracuda, SORBS, SpamCop, UCEProtect, and others).

AI Readiness IP lookup DNS check IP / Domain analysis ScamDetect Blacklist WHOIS

Tip: use mail.domain.com or the SMTP server IP address directly.