How often is the Policy Block List (PBL) zone updated?
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How often is the Policy Block List (PBL) zone updated?
The Policy Block List (PBL) DNSBL zone is rebuilt and reloaded every 15 minutes, 24/7.
To ensure high redundancy, Spamhaus has over 100 public DNSBL mirror servers located around the world. Each mirror is independently run as a free service to the Internet community, and all of them respond in realtime to public queries.
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