Blacklist check for mail servers and IP addresses

Free blacklist check: see whether a domain’s mail servers or an IP address are on spam blocklists – with explanation and solution. No data is stored.

No data is stored. For the check, the mail server’s IP address is sent as a DNS query to the blocklists – visitors’ data is not.

Background

Why e-mail suddenly stops arriving.

Blocklists collect IP addresses that have sent spam. Many mail servers reject e-mail from listed addresses. Common causes: a compromised mailbox, an infected device on the network or a misconfigured mail server.

Listed – what now?

Find the cause, fix it and request removal: seacube helps quickly and directly.