(18:11:57) proxy: Connection in progress
(18:11:57) proxy: Connected to messenger.hotmail.com:1863.
(18:11:57) proxy: Using CONNECT tunneling for messenger.hotmail.com:1863
(18:11:57) proxy: Proxy server replied with:
HTTP/1.1 502 Proxy Error ( The specified Secure Sockets Layer (SSL) port is not allowed. ISA Server is not configured to allow SSL requests from this port. Most Web browsers use port 443 for SSL requests.  )

Via: 1.1 C01

Connection: close

Proxy-Connection: close

Pragma: no-cache

Cache-Control: no-cache

Content-Type: text/html

Content-Length: 786   
(18:11:57) proxy: Connection attempt failed: HTTP proxy connection error 502
(18:11:57) msn: Connection error: HTTP proxy connection error 502
(18:11:57) msn: Connection error from Notification server (messenger.hotmail.com): HTTP proxy connection error 502
(18:11:57) connection: Connection error on 076B14A0 (reason: 0 description: Connection error from Notification server:
HTTP proxy connection error 502)