> I want to block DNS MX query made through my network. > What iptables rule I should use. I'll give you source to a _really_ alpha version dns match, but it's pretty much untested and unused right now. I wrote it when verisign did their stupid root wildcard trick. Since they backed down, I haven't had any reason to continue development. It's not going to be of use unless you are willing to put some time into debugging and testing. -- The hardest thing in the world to understand is the income tax. -- Albert Einstein
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