Exchange Server

[theNewOne]

Hi,
I have an Exchange Server 5.5 on a Windows NT Server 4.0...i found threads about this but not the answer for my question.
I have only one simple question:
Is it possible for me to migrate my system to Zimbra? With all Calenders, Mail-Accounts etc. ?

[jonallport]

Yes.

Get yourself an instance of ZCS. On the admin console you will see a 'downloads' link where you'll find the wizard to do this for you:

This Windows application performs a server to server migration of mail, calendar, and contacts from Microsoft Exchange to ZCS.

I hope that helps you out.