Outlook redemption library - Error in ADsGetObject

Hi all,

Currently we are using redemption library to access outlook mailboxes.
i am facing a problem while logging into exchange mailserver using
LogonExchangeMailbox method of RDOSession.


This is the error that i received from the above method.


Error in ADsGetObject: 0x8007203A.


Error code -2147016646.


this is all i could extract from the stack trace. I am using .NET as
my development platform. and the exchange server setup is as follows


We have a forest setup at the root level and the root domain
controller sits below and then it has got various mailbox server in
it.


I tried accessing one of the test account using outlook and i dont see
any problem in that. As i am new to this area i could not able to
resolve myself.


Could you please help?

many thanks,
Ramesh