Unable to access CalDAV/CardDAV

[Henning]

Hello,

attached a httpraw-log of a connection with thunderbird. No SSL
activated. I think it does not provide any useful information, but
that's probably up to you to decide...

Could you point me somewhere to look further?

best regards
Henning
-------------- n?chster Teil --------------
[24-Sep-2014 22:26:05 +0200]: PROPFIND /iRony/addressbooks/user.name%40domain.com/55acb5a63109-b5d810527c9c-f6cbb4b1/ HTTP/1.1
Host: domain.com
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.0 Lightning/3.3.1
Accept: text/xml
Accept-Language: de,en-US;q=0.7,en;q=0.3
Accept-Encoding: gzip, deflate
Accept-Charset: utf-8,*;q=0.1
Depth: 0
Content-Type: application/xml; charset=utf8
Content-Length: 175
Connection: keep-alive
Pragma: no-cache
Cache-Control: no-cache
Authorization: Basic aGVubmluZnnnnSOMEMORECHARACTERSnnnb2xkZHJlY2sy

[binary data]
[24-Sep-2014 22:26:05 +0200]: RESPONSE: HTTP/1.1 404 Not Found
Content-Type: application/xml; charset=utf-8

<?xml version="1.0" encoding="utf-8"?>
<d:error xmlns:d="DAV:" xmlns:s="http://sabredav.org/ns">
  <s:exception>Sabre\DAV\Exception\NotFound</s:exception>
  <s:message>Addressbook with name '55acb5a63109-b5d810527c9c-f6cbb4b1' could not be found</s:message>
  <s:sabredav-version>1.8.8</s:sabredav-version>
</d:error>