Security
Scan an IP across 60 DNSBL / RBL lists.
One list can be a false positive; many lists is serious. Delist on each list’s own form.
| List type | What it holds | Note |
|---|---|---|
Spamhaus ZEN |
Spam / hijack IPs | Critical for mail reputation |
SpamCop |
User complaints | Often temporary |
Barracuda |
Commercial DNSBL | Enterprise filters |
Other DNSBLs |
Botnet, open relay… | ~60 lists scanned |
DNSBLs list spam and abuse IPs. If your mail host is listed, messages are refused. The check queries reversed-IP.list-zone for an A record.
If you send from a different IP than the MX, scan that egress IP. Fix open relays/malware before requesting delist.
Examples
0 / 60 listsReputation side looks clear.ZEN listedFind the cause, then delist.Use each list’s delist form. First close open relays and malware on the mail host.
The checker queries 60 DNSBLs: Spamhaus ZEN, 0SPAM, Barracuda, SpamCop, UCEPROTECT and the other RBLs on the tool list.
If the A-record IP is listed, some corporate filters block the site too. Change IP or delist with the host.
Some lists support IPv6. Unsupported ones are skipped.
Your own IP and hosts you operate, yes. Do not profile other people’s IPs without a basis.