This guide will talk about blocked IPs and how you should handle them.
Our devices use the database of Webroot for it's IP Reputation filter.
You can verify the result of our device here:
How can I prevent certain IPs to get blocked?
First you should verify the result of our device with other IP Reputation services like Cyren, Cisco, Trendmicro, Symantec or Proofpoint. When they all are the same opinion, that the IP is clean, then you can add the IP to the whitelist without fear, that it could still cause harm to your network.
You can find the white list under the following path:
Configuration -> Security Service -> Reputation Filter -> IP Reputation -> White List
You can only add IPs to the white list. It's not possible to add URLs or FQDNs.