I don't know what the reason of your problem but often turning on debug trace in LWP helps to debug problems with LWP.

Try to add 

use LWP::Debug qw(+);

[download]

into you program and see what happens when it tryes to talk with proxy. See LWP::Debug docs for more info about LWP debug tracing.

In reply to Re: Why cant I connect through a proxy using perl? by IlyaM
in thread Why cant I connect through a proxy using perl? by Anonymous Monk

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