Well, I tried it. It was an UNMITIGATED DISASTER. The first thing it did was resurrect ALL of my old reminders in Outlook. At one point I had something like 7,000 reminders open on my desktop. Next, it created multiple entries for each appointment. The worst were recurring all-day appointments which were repeated at least three times each and stretched out over two days (presumably because they went from 12:00 am to 12:00 am). One birthday was repeated 8 times. The next problem was trying to uninstall it. Let me put it this way -- it didn't uninstall cleanly, and I spent a lot of time manually cleaning my registry. The only saving grace was that I had back-ups of my Outlook.pst file and a Sprite back-up of my Q9c. No permanent harm was done either to my desktop file or to the Q9c. If anyone in the future reads this, let me be clear -- DO NOT USE MAILXCHANGE BY 1 AND 1. YOU'LL BE SORRY. I'll be signing up for a hosted exchange server next weekend.
PlexHosted offers Hosted Exchange discount. Exchange 2010 25Gb + Free ActiveSync + Free 100 Mb SharePoint just at $6.95!
My friend bought 5 GB space in 13$/month for hosted exchange. Do you think it is right cost or he can get cheaper solutions? He is looking for 99% uptime with affordable price.
Like other people said on this forum, go with Sherweb. It's 7.95$/month, 99,9% uptime. It's a leader in Hosted Exchange, not a rookie business. I said a year ago that I'll give them a try for at least 30 days with one or two accounts, but after 15 days I have transferred the entire company (75 users).