Abusix Mail Intelligence

Email Blacklist

This list combines all our email blacklists. This is the recommended list to use on most SMTP servers.

Spam Blacklist
not listed
Policy Blacklist

This blacklist lists all IP addresses that are unlikely to be used by a legitimate mail server. Legitimate mail servers should use a static IP address with a non-generic PTR record and that reflect the host and domain name of the mail server and ideally should match the forward lookup for the same name (FCrDNS).

It is designed to catch botnet traffic, compromised hosts, hijacked IP space and compute/VPS hosts.

This list is generated by running a reverse DNS lookup for every IPv4 IP address and lists IPs with:

  • no PTR record
  • PTR record with an invalid top-level domain (TLD)
  • PTR record contains part of the IP address (e.g. 127-0-0-1.example.com)
  • PTR indicates dynamic IP (e.g. subdomain contains: dynamic, dyn, cable, generic-host, nothing, dsl, dial, dhcp, unallocated, broadband, internetdsl, gprs, no-dns-yet, unassigned, unknown, ipngn, ...)

Any host containing smtp, mail, mx, mta is automatically excluded.

Exploit Blacklist
not listed
not whitelisted
Abusix Trap Hits (last 30 days)
<100 hits
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IP Details
no hostname

NamePJSC Rostelecom