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About prabhjot

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  1. Hello all, I am new to SpamCop. I read on this page that we can use a dns query to know if an IP is in a black list or not in our custom application/software. The page says that if I want to check an IP like then my dns query should be: nslookup But for me this returns the messsage that this is a non-existent domain. I wanted to confirm my understanding. So, if I receive non-existent domain message it means that IP is not blacklisted else it is blacklisted? Thanks and have a nice day!