We are running Border Manager 3.6 fully patched on a Netware 6 server
fully patched. We seem to be having problems getting access to a few
web sites. Users are going through the proxy and get:
502 Bad Gateway
Mal-formed reply from origin server.

If the proxy server is bypassed and access to the site is tried
through BM, there is an IE error indicating that the website cannot be
accessed. If a workstation is put on the public side of BM it can
access the site without any problems. We have check and we seem to
have the latest version of Proxy.nlm, latest version of TCPIP.NLM

What would be stopping access to this web site?