I have a strange situation here with either outlook or exchange 2010.
On an outlook 2010 machine (and not all of them), you take outlook out of cached mode it goes offline. You can not force it back online and its grayed out.
If I place the client back into cached mode reopen outlook, goes back online.
I checked in exchange on my particular test subjects and exchange in all instances was _NOT_ configured to prevent a connection from outlook in non-cached mode meaning the client was allowed to connect either way.
This affects any client whether outside or inside (outside assumes rpc over http).
Have anyone seen this? and if so what was done to correct this issue? I see absolutely no policy to prevent this in our domain at all. If you have a check list I could follow to confirm this ill be happy to do that too.