Issue with MSN Connectivity.

Windows Messenger
Live Messenger
Gaim 2 Beta 3.1.1

Hey Guys. I posted a while ago about getting constant Default Gateway
Offlineerrors in a number of programs - Network Diagnostics would return,
MSN and Win Msgr would refuse to sign in.

Currently Using any of the above three programs I cannot connect to msn.
With gaim which does connect at home and at other locations I can choose the
server.
messenger.hotmail.com, messenger.live.com, 65.54.239.80,
gateway.messenger.hotmail.com hell I even created a DNS entry at DynDns to
gaim.ath.cx to see if it was that.
I have tried connecting on port 80 and 1863, with http method selected and
deselected.
Eventually I fired up wireshark and determined the proxy.
Due to access control rules outside of my control - HTTP IP connections are
not allowed - so no access to an IP via HTTP.
Seems ok - except when MSN, Win Msgr or Gaim attempts to connect, the
protocol initially connects to gateway.messenger.hotmail.com fine - but then
for some reason switches to using IP addresses for the rest of the
communication.

POST
http://gateway.messenger.hotmail.com...er.hotmail.com
HTTP/1.1
Accept: */*
Accept-Language: en-us
User-Agent: MSMSGS
Host: gateway.messenger.hotmail.com
Proxy-Connection: Keep-Alive
Proxy-Authorization: Basic
Connection: Keep-Alive
Pragma: no-cache
Content-Type: application/x-msn-messenger
Content-Length: 24
VER 1 MSNP9 MSNP8 CVR0

Goes through ok.. It then sends this request.

POST http://207.46.106.13/gateway/gateway...82873418.30256
HTTP/1.1
Accept: */*
Accept-Language: en-us
User-Agent: MSMSGS
Host: 207.46.106.13
Proxy-Connection: Keep-Alive
Proxy-Authorization: Basic
Connection: Keep-Alive
Pragma: no-cache
Content-Type: application/x-msn-messenger
Content-Length: 74
CVR 2 0x0409 winnt 5.1 i386 MSNMSGR 6.0.0602 MSMSGS caledai

At which point the access control rules will block the connection, and
return a variety of errors.
Gaim - Reading Error
Win Msgr - Unable to connect
Live Msgr - Unable to connect 81000306

Is there any way to force Windows Messenger, Live Messenger or Gaim to
connect without converting gateway.messenger.hotmail.com to 207.46.106.13
All I can think off at the moment is a local proxy that has the capacity to
do a URL conversion and convert any that IP back to
gateway.messenger.hotmail.com

Some further information on this.

I am now aware of the reason why the default gateway is offline - I knew why
as in not being able to ping the router, but I now know the reasoning behind
it. It has been done to conform to a security policy and blocking the
internal ping was one thing closed under a general template for blocking
viruses and worms.

This doesn't explain why gateway.messenger.hotmail.com is converted to a
specific IP address and I have verified this fact via proxy logs that show
high hit counts of entries associated with IP addresses that resolve to msn
via nslookup.