Bart,

How do you get mobileme to work through a proxy server on the Mac?

On Windows, Apple provides a control panel just for configuring proxy servers for mobileme. Yet, Apple has never provided such support for proxies via the Mac. I always get a "you're not connected to the internet" error when I try to login. The Network Diagnostics tool claims that I am not on the internet even though I freely run everything (http, https, ftp, dropbox, itunes, software update, etc.)

Only mobileme refuses to connect through our corporate proxy server because Apple is using non-standard ports but will not admit to it. I've gotten help from level 3 techs and engineers at Apple over the phone but they also resort to the line "Mobileme does not guarantee that it will work through corporate networks, firewalls or proxy servers. Very disappointing. :-(