Check Your IPs Against DNSBL Blacklists
Monitor your PowerMTA server IP reputation with PMTAcore's built-in blacklist checker. Check single IPs, bulk IP lists, or all IPs grouped by server against multiple DNSBL registries. Results stream in real-time with collapsible result cards showing listed/clean status per registry. Catch blacklistings early before they impact your email deliverability. Free for all users.
IP Reputation Monitoring
Keep your PowerMTA sending reputation clean with proactive blacklist monitoring
Single IP Check
Enter any IP address and check it against all configured DNSBL registries instantly. Quick way to verify a specific server IP is clean before sending.
Bulk IP Checking
Check multiple IP addresses at once. Paste a list of IPs and scan them all against blacklist registries in a single operation.
Server-Grouped Checking
Check all IPs from your saved servers grouped by server name. See which server has blacklisted IPs at a glance without entering IPs manually.
Real-Time Streaming Results
Results stream in as each DNSBL registry responds. No waiting for all checks to complete — see listed/clean status as it happens.
Multiple DNSBL Registries
Checks against multiple well-known DNSBL registries including Spamhaus, Barracuda, SORBS, and more. Comprehensive coverage of major blacklists.
Collapsible Result Cards
Results are organized in collapsible cards per IP. Expand to see detailed per-registry status, collapse to get a quick overview of your entire IP range.
Monitor Your IP Reputation
Catch blacklistings early and protect your PowerMTA sending reputation — free for all PMTAcore users.