Thank you for the answer.
I’m not so familiar with SQL, and i missed the information to restore the SQL full-dump (zarafa.dump) on the new Server. Maybe it is a good idea to add on the Kopano Wiki pages in the “Backup&Restore” section also the info’s to restore a full dump (for dummies like me) .
I did it this way for now:
# service kopano-server stop
# rsync -a ucsbak:/backup/kopano/kopano-attachments/* ucsmail:/var/lib/kopano/attachments/
# mysql kopano -p < zarafa.dump
# service kopano-server start
A short test on the webapp on the new host showed me my mails, looks good i think.
Is it that easy - would be cool?