Was ich gefunden habe ist folgendes:
"response": {
"status": 200,
"statusText": "OK",
"httpVersion": "HTTP/1.1",
"headers": [....
"content": {
"mimeType": "application/json; charset=utf-8",
"size": 370,
"text": "{\"zarafa\":{\"reminderlistmodule\":{\"reminderlistmodule7\":{\"error\":{\"type\":1,\"info\":{\"hresult\":2147942487,\"title\":null,\"hresult_name\":\"MAPI_E_INVALID_PARAMETER\",\"file\":\"class.reminderlistmodule.php:230\",\"display_message\":\"Could not load the contents of this folder. (null) (An invalid parameter was passed to a function or remote procedure call)\",\"details_message\":\"\"}}}}}}"
},
Und das wiederholt sich ca. alle 20-30 Sekunden.