Email blacklist check

A blacklist (or blocklist, DNSBL) is a list of IP addresses or domains that sent spam or hit spam traps. Mail servers check them for every incoming message, so a listing can send your email to spam or get it rejected.

The address your email is sent from. Enter your domain and we check your mail servers and website automatically, but if you send through a service like Google Workspace or SendGrid, their sending IPs are theirs to manage. To find yours, open an email you sent, view the original, and look at the first Received line.

First fix the cause: a hacked account or website, malware, or sending to old or bought lists. Then go to the list's website, look up your IP and follow its removal steps. Many lists, like SpamCop, remove entries automatically after a day or two without new spam.

The list didn't answer or refused our DNS server; some lists limit free lookups. It doesn't mean you're listed. Try again later, or look the address up on the list's own website.