Version details: 2.2.2
Distribution/Version: Slackware 10.1

[ Note: I'm using ximian-connector-2.2.2, but the version selection list doesn't
contain anything more recent than 2.1 ]

I need to access an Exchange 2003 server solely via its OWA frontend server,
which uses forms based authentication. Neither the Exchange server itself, nor
the GC server or domain controllers are accessible via internet. The
authentication works fine, but I still can't access my mailbox. Whenever I try
to connect, I get "Error: No mailbox for user <username> at <hostname>".

The problem seems to be that my username is different from my mailbox name in
the OWA URI. The basic OWA URI for authentication/login is "https://hostname/",
the mailbox for a particular user is at "https://hostname/firstname.lastname/",
and the (Windows/Exchange) usernames are "firstname" plus 0 - 2 additional
characters from "lastname". In my case, I have to login at "https://hostname/"
with username="thomas", then I get redirected to
"https://hostname/Thomas.Zajic/" (eg. my inbox is at
"https://hostname/Thomas.Zajic/Inbox", my calender is at
"https://hostname/Thomas.Zajic/Calendar", etc.).

Running evolution-exchange-storage with E2K_DEBUG set shows that although it
_somehow_ seems to get the right mailbox name from _somewhere_, it still insists
on appending the username at the end of the URI (ie. after the mailbox name),
resulting in a well-deserved 404 error:

[zlatko@disclosure]:~$ E2K_DEBUG=2
/usr/local/libexec/evolution/2.2/evolution-exchange-storage 
Evolution Exchange Storage up and running
E2K_DEBUG=2
GET /Thomas.Zajic/thomas/ HTTP/1.1
E2k-Debug: 0x81d0310 @ 1114665585
Host: xxx.xxx.xxx
Accept-Language: en-US, en
User-Agent: Evolution/2.2.2

302 Moved Temporarily
E2k-Debug: 0x81d0310 @ 1114665585
Set-Cookie: sessionid=; path=/; expires=Thu, 01-Jan-1970 00:00:00 GMT
Set-Cookie: cadata=; path=/; expires=Thu, 01-Jan-1970 00:00:00 GMT
Location:
https://xxx.xxx.xxx/exchweb/bin/auth/owalogon.asp?url=https://xxx.xxx.xxx/Thomas.Zajic/thomas/&reason=0
Connection: close
Content-Length: 0

GET /Thomas.Zajic/thomas/ HTTP/1.1
E2k-Debug: 0x8205360 @ 1114665585
Host: xxx.xxx.xxx
User-Agent: Evolution/2.2.2

302 Moved Temporarily
E2k-Debug: 0x8205360 @ 1114665585
Set-Cookie: sessionid=; path=/; expires=Thu, 01-Jan-1970 00:00:00 GMT
Set-Cookie: cadata=; path=/; expires=Thu, 01-Jan-1970 00:00:00 GMT
Location:
https://xxx.xxx.xxx/exchweb/bin/auth/owalogon.asp?url=https://xxx.xxx.xxx/Thomas.Zajic/thomas/&reason=0
Connection: close
Content-Length: 0

GET
/exchweb/bin/auth/owalogon.asp?url=https://xxx.xxx.xxx/Thomas.Zajic/thomas/&reason=0
HTTP/1.1
E2k-Debug: 0x8205360 @ 1114665585 [restarted]
Host: xxx.xxx.xxx
User-Agent: Evolution/2.2.2

200 OK
E2k-Debug: 0x8205360 @ 1114665585
Date: Thu, 28 Apr 2005 05:19:45 GMT
X-Powered-By: ASP.NET
Expires: Thu, 28 Apr 2005 05:18:45 GMT
Server: Microsoft-IIS/6.0
Cache-Control: no-cache
Content-Length: 8865
Content-Type: text/html

POST /exchweb/bin/auth/owaauth.dll HTTP/1.1
E2k-Debug: 0x8227a38 @ 1114665585
Host: xxx.xxx.xxx
User-Agent: Evolution/2.2.2
Content-Type: application/x-www-form-urlencoded

302 Moved Temporarily
E2k-Debug: 0x8227a38 @ 1114665585
Set-Cookie: sessionid=663b3e0f-c558-45ba-a16b-b33d8b5cc1c6; path=/
Set-Cookie:
cadata="5dmPeHhhukEM+/+DdVz+27oobWX5ojVTGSpx34B5Z7rURR5X91/qrxijPHkQf6Z0wKlTfe/IUAj8=";
HttpOnly; secure; path=/
Location: https://xxx.xxx.xxx/Thomas.Zajic/thomas/
Date: Thu, 28 Apr 2005 05:19:45 GMT
X-Powered-By: ASP.NET
Server: Microsoft-IIS/6.0
Content-Length: 0

404 Resource Not Found
E2k-Debug: 0x81d0310 @ 1114665585
MS-WebStorage: 6.5.7226
Date: Thu, 28 Apr 2005 05:19:45 GMT
X-Powered-By: ASP.NET
Server: Microsoft-IIS/6.0
Connection: close
Content-Length: 1635
Content-Type: text/html


** (evolution-exchange-storage:27524): WARNING **: Unexpected kerberos error
-1765328164
[zlatko@disclosure]:~$ 

Under Edit->Preferences->Mail Accounts, I have the following settings in the
"Receiving Email" tab:

Server Type: Microsoft Exchange
Username: thomas
OWA URL: https://xxx.xxx.xxx/
Authentication Type: Plaintext Password

Changing the OWA URL to "http://xxx.xxx.xxx/Thomas.Zajic/" didn't make any
difference, and changing the username to "Thomas.Zajic" didn't work at all, of
course (resulted in "Authentication Error").

I'm using evolution-2.2.2, evolution-data-server-1.2.2, evolution-webcal-2.2.1,
ximian-connector-2.2.2, gal-2.4.2 and gtkhtml-3.6.2, all self-compiled together
with the rest of GNOME-2.10 on Slackware 10.1. Please let me know if you need
any additional information or debugging output. Thanks!