Issues with LDAP XPCOM API in Thunderbird

Hello,

I'm trying to use the LDAP API in Thunderbird to make a non-anonymous,
password-enabled, search -- which is not possible with
nsILDAPSyncQuery AFAIK.
So I played a bit with the low-level API, i.e. nsILDAPConnection,
nsILDAPOperation and nsILDAPMessageListener in particular.
I didn't go very far as calling nsILDAPOperation.simpleBind()
constantly threw a 0x8059005b error.
So I went on using the LDAP shell test file from Mozilla source tree
[1] but that produced the same result...
In the XPC shell, I simpy executed something like :

  createConn("localhost", 389, "c=domain,c=local");
  simpleBind("password");
  searchExt("c=local", Components.interfaces.nsILDAPURL.SCOPE_SUBTREE,
            "([email protected])", [], []);

Again, I ran into the simpleBind() issue :

  [Exception... "Component returned failure code: 0x8059005b
[nsILDAPOperation.simpleBind]"  nsresult: "0x8059005b (<unknown>)"
location: "JS frame :: /home/damiano/ldapshell.js :: simpleBind ::
line 250"  data: no]damiano@suricat:/local/CVS_1_8/mozilla/obj-i686-pc-
linux-gnu/mail/dist/bin

Any idea why ? Has anyone succeeded in using this API in Thunderbird ?

Thanks a lot,

[1] http://mxr.mozilla.org/mozilla1.8/source/directory/xpcom/tests/ldapshell.js

--
Damiano ALBANI