Hello,
thank you very much for the link and taking time to answer Questions for a foreign Product!!
I think i will give that a try. Is it as the link-name suggests intended for mobile usage or is it also meant for the Desktop-Client? The Documentation seems to cover only mobile Clients: http://software.open-xchange.com/products/appsuite/doc/mobilityconnector/OX-App-Suite-Connector-for-Business-Mobility-English-v7.10.0.pdf
Is it true that the EM-Client is the preferred Desktop Client? Sadly the EM-Client also does not sync sieve-rules. Additionally i have a second Problem which makes handling Appointments very uncomfortably: OX em-client unable to handle invitation
Best regards.
Matthias