![]() This is why I use blacklist checks like these to determine if I should block an IP address locally. Yes, httpBL is a HTTP blacklist, here’s why I always like to see whether an IP address is listed there too: Simply because I wouldn’t want to receive email from an server that’s known to be a comment spammer or harvester. ![]() The PowerShell script below is fully functional, except for the Project Honey Pot blacklist (httpBL). On Linux we have a bash script to look up an IP address’ blacklist status, and now here’s one for Windows Server & PowerShell too. This is better done with a PS script than on your cmd.exe or PowerShell shell (typing in a reversed IP and a blacklist host address for nslookup can be a real pain…). Sometimes you need to be able to look up an IP address blacklist status in more than one blacklist. ![]() 2 Conclusion blacklist checking in PowerShell How to check an IP Address blacklist status in PowerShell in Windows Server
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