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+---- Thread: What is Blacklist Monitoring (/showthread.php?tid=26)
What is Blacklist Monitoring - wsadmin - 10-13-2017
Blacklist (DNSBL) Monitoring service will ensure the IP of your mail server has not fallen into one of the major DNSBL (DNS-based Blackhole List) blacklists.
Email blacklist check is vital for your business because if your server is blacklisted, spam filters might block some or all of the emails that your servers send out.