Re: Future of qmail: will it care about viri/worms/etc?

[Alex Shipp]

>Here in .au there are rumblings of legislation for ISPs to block virii

Its mathmatically provable that there exists an infinite number
of files which cannot be analysed by any virus scanner - that it to
say, the virus scanner would be unable to prove that the file definately
does not contain a virus. (The proof is a derivative of the famous Turing
machine problem, for those interested.)
I wonder, therefore, whether any legislation will ever occur, and even
if it did, whether it would stand up in court.



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