Falls der Link stirbt hier nochmal ein Auszug:
ZitatAlles anzeigenTo isolate the issue, you may check how it works if you increase the timeout with the following steps:
1. On the Client Access server, open the following file with a text editor such as Notepad: \ExchWeb\EWS\web.config
2. Locate the following section in the web.config file:
CodeAlles anzeigen<!-- Mailbox Replication Proxy Server configuration --> <MRSProxyConfiguration IsEnabled="true" MaxMRSConnections="100" DataImportTimeout="00:01:00" />
3. Make sure value of the IsEnabled property is set to true.
4. Check the value of the DataImportTimeout property. The minimum value is one minute (00:01:00), and the maximum value is 30 minutes (00:30:00).
5. Set a higher value, but make sure the value is less than 30 minutes.
6. The recommended value for this field should be 00:20:00 (20 minutes).
7. After the values are configured correctly, save and close the web.config file.