I am trying to create a rule to block full IP range or ranges. So what I tried is to create a rule with "When senders IP matches some words" and enter the IP range as i.e. 126.96.36.199/24 (did not work) so tried it as 188.8.131.52-256 did not work either. in both cases I tried it with "matches (regex)" and "contains a value from a list" Action is set to delete.
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