It does work now,
however: I have to change the authentication type for all my test steps from
Global HTTP Settings to
NTLM.
Outgoing HTTP is then:
POST https://webmail.timetellbv.nl/ews/exchange.asmx HTTP/1.1
Accept-Encoding: gzip,deflate
SOAPAction: "http://schemas.microsoft.com/exchange/services/2006/messages/ResolveNames"
Content-Type: text/xml; charset=utf-8
Content-Length: 553
Host: webmail.timetellbv.nl
Connection: Keep-Alive
User-Agent: Apache-HttpClient/4.1.1 (java 1.5)
Cookie: exchangecookie=5ca355bc79d941dea1079a70a8ba479d
Cookie2: $Version=1
Authorization: NTLM TlRMTVNTUAADAAA[snip]3ADQA
