Hi Christian,
Have you installed the MS Exchange MAPI Client?http://www.microsoft.com/downloads/en/details.aspx?FamilyID=e17e7f31-079a-43a9-bff2-0a110307611e&displaylang=en
yes, the MAPI Client is installed on the MS Exchange mailbox server. Regards, -- Björn Rackoll Universität Hamburg Regionales Rechenzentrum Zentrale Dienste Schlüterstr. 70 20146 Hamburg Tel.: +49 (0)40 42838 - 63 11 Fax: +49 (0)40 42838 - 62 70 Mobil: +49 (0)172 427 0301 E-Mail: bac...@rrz.uni-hamburg.de