Email Blacklist Checker

ℹ️ About Email Blacklists (RBLs)

A Real-time Blackhole List (RBL) is a database of IP addresses known to send spam. Mail servers check incoming connections against these lists and may refuse or quarantine mail from listed IPs. If your mail server's IP is on a blacklist, your legitimate emails may be blocked.

• Spamhaus ZEN — Most widely used, combines SBL, XBL and PBL
• SpamCop BL — Based on spam reports from users
• Barracuda — Used by many corporate mail filters
• SORBS — Includes dynamic IP, spam source, and web abuse lists
• UCEprotect — Community-based spam reporting

If you're listed, visit the blacklist's website for their delisting procedure. Most require the spam activity to have stopped before delisting.