On Sun, 2012-10-21 at 21:18 +0200, Reindl Harald wrote:

> Here corporate email is company's (depends on country) 

this is questionable

Actually he is right, it depends on where you are, even in Australia, corporate email is company property, managers (and entrusted sys admins) have the right to inspect an employees staff mail account at any time without a reason, on company equipment.

Hell, even if employees uses personal MSN at work (ok, shouldn't, but we all know many do) it is companies legal right to inspect/read logs - any and all data contained on company hardware, be it desktops or laptops is company property, of course like OP said, this is country dependant.

if you would be permitted you would have the login-data

and again: it is technically impossible to have a master password
in roundcube because it is a webmail and has (thanks god) to use
the same autentication as any other client

If the OP used dovecot as the backend, there is a way, never done it, but have seen it mentioned.

Cheers