We have the following problem at a zimbra installation:
At times users get in their browsers the session from other users.
this seems to cooincide with an installation of an trendmicro proxy, the setup is like this:
[clients] -> [trendmicro] -> [proxy loadbalanced [web/imap] [web/imap]] -> [zimbra]
changing the setup is not an option as this is a government department and the setup is approved and can not be changed.
I personally believe it's a session hickup introduced with the trendmicro, so i hope without having more information (which I will get hopefully in the next days) that someone came up with: try to change zimbra's session management to .....
I personally am fairly new to zimbra and do not know much about it, I am just the guy right now in charge to fix this setup.
Thank you and best