The Blacklist test will check a mail server IP address against over a hundred based email blacklists
Blacklist check
This test will check a mail server IP address against over a hundred DNS based email blacklists. (Commonly called Realtime blacklist, DNSBL or RBL). Please allow up to 60 seconds for all tests to complete.
Why is this important?
If your mail server has been blacklisted, some email you send may not be delivered.
Check your mail server IP address often, or use an Email Marketing system that does this automatically.
