Is your mail server on a blocklist?
Check an IP address or a domain against nine public blocklists, with removal links if you are listed.
Which lists we check
Spamhaus ZEN, SpamCop, Barracuda, PSBL, Mailspike and UCEPROTECT — the lists most mail servers consult before accepting a message.
Spamhaus DBL, SURBL and URIBL — lists of domains seen in spam, checked against the links and senders in each email.
When you enter a domain, we also check the IP addresses of its first two mail (MX) servers.
Questions
Find the cause before asking for removal: a hacked mailbox or website, a contact form sending spam, a bought or very old list, or a sudden large send. Fix it, then follow the list’s removal link. Most lists drop a listing on their own a few days after the spam stops.
The list did not reply just now, or limits how many free lookups it answers. It is not a listing. Try again later.
The address your email is sent from. You can find it in the headers of an email you sent (“Received: from …”), or ask your host. Shared services like Gmail and Outlook send from their own addresses, so check your domain instead.
No. Results are kept for 10 minutes so repeated checks are fast, then forgotten.
More free tools
Check this before every send — automatically.
Devlo checks your domain and blocklists before each campaign and warns you while there is still time to fix it.
Ready togrow smarter?
Bring your list, we'll bring the deliverability. Set up takes an afternoon, and the Free plan stays free.