Compromised data policy.
Check out these 
results.
https://forum.hestiacp.com/search?q=Spamhaus%20
You may find that your Spamhaus queries list the entire internet if you are not querying them in accordance with their usage guidelines.
If you use a shared or open DNS resolver, you will likely find yourself in conflict with their policies.
2 Likes
I also had this problem with spamhaus and gmail. My solution was to hash out spamhaus in the Hestia configuration file and just use spam cop.
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