Maybe the server sends something different when it does (not) detect Firefox or Internet Explorer. You don't tell us how it fails and also don't show us how you inspect the retrieved content. I recommend looking at the headers that go over the wire (using wireshark for example) and eliminating the differences one by one.

In reply to Re: Why this file fetch fails with WWW::Mechanize? by Corion
in thread Why this file fetch fails with WWW::Mechanize? by ZJ.Mike.2009

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