Re: @ Korev
"It's pretty straightforward : is Linux as functional at mail, calendaring, forms, rules, and tasks as a Windows/outlook/Exchange combination? If not, it doesn't matter if the calendars are delivered by e-mail or flying monkeys."
Gosh - I wouldn't know.
All I remember from the days when Munich was Redmond East is that my PSD/T? file contained my whole life that I carried around on a bunch of devices 'just in case'. Moving to Linux and Linux apps just made things a bit simpler and much more robust. Never a problem in my company and a smile when friends in other companies were having 'issues' with Outlook/Exchange.
So happy to hear Microsoft have at last caught up and overtaken Linux with open and integrated sets of software that belong to me and not held behind a proprietary paywall.