You're absolutely right, I'm trying to enable a case where it cannot be used, in this case combined with SSL (SecureSocketLayer = true, SSL is actually not set on Active Directory Side though). In that particular case in my environment a System.DirectoryServices.Protocols.DirectoryOperationException exception is thrown. The content is shown below :
<ExceptionTypeName>System.DirectoryServices.Protocols.DirectoryOperationException</ExceptionTypeName>
<Message>The server cannot handle directory requests.</Message>
<Source>System.DirectoryServices.Protocols</Source>
<StackTrace> at System.DirectoryServices.Protocols.ErrorChecking.CheckAndSetLdapError(Int32 error)
at System.DirectoryServices.Protocols.LdapSessionOptions.SetIntValueHelper(LdapOption option, Int32 value)
</StackTrace>
<HelpLink />
<TargetSite>Void CheckAndSetLdapError(Int32)</TargetSite>
<DirectoryOperationException.Response>(null)</DirectoryOperationException.Response>
Not very useful as is.
TIA