Copying Emails from MS Exchange Server via imapsync to Kolab2 Server

[Younex]

Hello Kolab Users!

It´s possible to transfer mails, appointments,... from an ms-exchange
server trough the internat to my new kolab server via imapsync?
I know i can sync them via the client, but because the upstream of an
internet connection isn´t very fast, i looking for better solutions.
I read this artilce in german, but i don´t know exactly what server the
author is talking about (for german readers:
http://activmedia.ch/groupware5.php#migration)

thx &
best regards,
younex