Caldav сервер отвечает 403

Я пытаюсь подключиться к серверу Caldav с помощью клиента PHP. Я нашел эту клиентскую библиотеку http://repo.or.cz/w/davical.git/blob/HEAD:/inc/caldav-client.php и я пытаюсь следовать примеру, обмен доменом / имя пользователя / пароль здесь.

$cal = new CalDAVClient( "http://192.168.10.11/caldav/users/domain.com/user-name/", "user-name", "password" );
$options = $cal->DoOptionsRequest();
if ( isset($options["PROPFIND"]) ) {
// Fetch some information about the events in that calendar
$cal->SetDepth(1);
$folder_xml = $cal->DoXMLRequest("PROPFIND", '<?xml version="1.0" encoding="utf-8" ?><propfind xmlns="DAV:"><prop><getcontentlength/><getcontenttype/><resourcetype/><getetag/></prop></propfind>' );
}
var_dump($folder_xml);exit;

Это уже возвращает мне 403 Forbidden:

string(1928) "HTTP/1.1 207 Multi status
Connection: Close
Content-Type: text/xml; charset="utf-8"Date: Fri, 2 Oct 2015 07:02:28 GMT
DAV: 1, access-control, calendar-access, calendar-schedule, calendar-proxy, calendar-availability, calendarserver-private-events, calendar-auto-schedule, calendarserver-principal-property-search, calendarserver-sharing, calendarserver-sharing-no-scheduling, addressbook, calendar-default-alarms
Server: Kerio Connect 8.5.1
Transfer-Encoding: chunked
X-UA-Compatible: IE=edge

584
<?xml version="1.0" encoding="UTF-8"?><a:multistatus xmlns:a="DAV:" xmlns:c="urn:uuid:c2f41010-65b3-11d1-a29f-00aa00c14882/" xmlns:b="xml:"><a:response><a:href>/caldav/users/domain.com/user-name/</a:href><a:propstat><a:status>HTTP/1.1 200 OK</a:status><a:prop><a:resourcetype><a:collection/><a:principal/></a:resourcetype></a:prop></a:propstat><a:propstat><a:status>HTTP/1.1 403 Forbidden</a:status><a:prop><a:getcontentlength/><a:getcontenttype/><a:getetag/></a:prop></a:propstat></a:response><a:response xmlns:d="http://calendarserver.org/ns/"><a:href>/caldav/users/domain.com/user-name/calendar-proxy-write/</a:href><a:propstat><a:status>HTTP/1.1 200 OK</a:status><a:prop><a:resourcetype><a:collection/><a:principal/><d:calendar-proxy-write/></a:resourcetype></a:prop></a:propstat><a:propstat><a:status>HTTP/1.1 403 Forbidden</a:status><a:prop><a:getcontentlength/><a:getcontenttype/><a:getetag/></a:prop></a:propstat></a:response><a:response xmlns:e="http://calendarserver.org/ns/"><a:href>/caldav/users/domain.com/user-name/calendar-proxy-read/</a:href><a:propstat><a:status>HTTP/1.1 200 OK</a:status><a:prop><a:resourcetype><a:collection/><a:principal/><e:calendar-proxy-read/></a:resourcetype></a:prop></a:propstat><a:propstat><a:status>HTTP/1.1 403 Forbidden</a:status><a:prop><a:getcontentlength/><a:getcontenttype/><a:getetag/></a:prop></a:propstat></a:response></a:multistatus>
0

"

Любая идея, где я мог бы искать, чтобы исправить запрещенные ошибки? Я понятия не имею, почему я ничего не получаю.

редактировать:
Я наконец нашел время, чтобы разобраться в этом, но нашел только несколько журналов, но пока нет решения. Не могу понять, что идет не так, но это то, что я нашел в журналах

[07/Dec/2015 15:29:51][21240] {https} Task 202600 handler BEGIN
[07/Dec/2015 15:29:51][21240] {https} Task 202600 handler starting
[07/Dec/2015 15:29:51][21240] {https} HTTPS connection from 192.168.10.91:59937 started
[07/Dec/2015 15:29:51][21240] {https} PROPFIND request for URI /caldav/users/mydomain.com/myuser/
[07/Dec/2015 15:29:51][21240] {https} User-Agent header: DAViCalClient
[07/Dec/2015 15:29:51][21240] {webdav} PROPFIND /caldav/users/mydomain.com/myuser/ received from remote host='192.168.10.91', user-agent='DAViCalClient'
[07/Dec/2015 15:29:51][21240] {webdav} PropertyRequestReader: found property "getcontentlength" from namespace "DAV:"[07/Dec/2015 15:29:51][21240] {webdav} PropertyRequestReader: found property "getcontenttype" from namespace "DAV:"[07/Dec/2015 15:29:51][21240] {webdav} PropertyRequestReader: found property "resourcetype" from namespace "DAV:"[07/Dec/2015 15:29:51][21240] {webdav} PropertyRequestReader: found property "getetag" from namespace "DAV:"[07/Dec/2015 15:29:51][21240] {webdav} (B)PROPFIND: User myuser@mydomain.com is listing properties of principal: myuser<_at_>mydomain.com
[07/Dec/2015 15:29:51][21240] {webdav} User: myuser<_at_>mydomain.com refers to an unsupported property: "getcontentlength" of resource: "" using handler: "PrincipalHandler"[07/Dec/2015 15:29:51][21240] {webdav} User: myuser<_at_>mydomain.com refers to an unsupported property: "getcontenttype" of resource: "" using handler: "PrincipalHandler"[07/Dec/2015 15:29:51][21240] {webdav} User: myuser<_at_>mydomain.com refers to an unsupported property: "getetag" of resource: "" using handler: "PrincipalHandler"[07/Dec/2015 15:29:51][21240] {webdav} (B)PROPFIND: User myuser@mydomain.com is listing properties of principal: myuser<_at_>mydomain.com
[07/Dec/2015 15:29:51][21240] {webdav} User: myuser<_at_>mydomain.com refers to an unsupported property: "getcontentlength" of resource: "" using handler: "PrincipalHandler"[07/Dec/2015 15:29:51][21240] {webdav} User: myuser<_at_>mydomain.com refers to an unsupported property: "getcontenttype" of resource: "" using handler: "PrincipalHandler"[07/Dec/2015 15:29:51][21240] {webdav} User: myuser<_at_>mydomain.com refers to an unsupported property: "getetag" of resource: "" using handler: "PrincipalHandler"[07/Dec/2015 15:29:51][21240] {webdav} (B)PROPFIND: User myuser@mydomain.com is listing properties of principal: myuser<_at_>mydomain.com
[07/Dec/2015 15:29:51][21240] {webdav} User: myuser<_at_>mydomain.com refers to an unsupported property: "getcontentlength" of resource: "" using handler: "PrincipalHandler"[07/Dec/2015 15:29:51][21240] {webdav} User: myuser<_at_>mydomain.com refers to an unsupported property: "getcontenttype" of resource: "" using handler: "PrincipalHandler"[07/Dec/2015 15:29:51][21240] {webdav} User: myuser<_at_>mydomain.com refers to an unsupported property: "getetag" of resource: "" using handler: "PrincipalHandler"[07/Dec/2015 15:29:51][21240] {https} Response: HTTP/1.1 207 Multi status
[07/Dec/2015 15:29:51][21240] {https} Request finished in 0.00 s, received 373 bytes, sent 1916 bytes
[07/Dec/2015 15:29:51][21240] {https} Task 202600 handler END