Hi,I've got a problem to deploy owa with ISA 2006.Our Isa is in the dmz and the user are autheticated via ldap.We're migriting in a new forest with a new Administrator credentials. So we've changed our Exchange Server. And now I get followingerror message in the eventlog if I want to log in via owa:The LDAP server 192.168.10.151 did not respond. If the server is physically reachable and a secure (SSL) connection is required, this event may be caused by failure of the SSL handshake.This event may also occur when the credentials used to connect to the LDAP server to verify the status and change the password of an account are rejected by the serverI changedonly the policies on the ISA. I've not create new policies. The Administrator and the password for the new ldap server is different to the old oneand now I'm searching for a solution to retype the credentialsto authenticate the administrator.Can anyone help me?

Check the Web Listener, Authentication Tab. You will be able to configure your LDAP servers there.SF - MCITP:EMA, MCTS: MOSS 2007, OCS 2007, Exchange 2007

I've done this. That's not the problem. But I have to authenticate to the new ldap server with other credentials as before. And there's no window commin up to retype the credentials.

Are you talking about authenticating to the LDAP for OWA via the listener policy? There is an authentication tab, you select LDAP and then click advanced (going from memory here).The listener shoudl control the authenitcation and credentials for the owa access.Is the ISA box in the old domain, work group, or new domain?It may be different if the IsA box is in the domain. I tend to keep my isa servers in a WG.SF - MCITP:EMA, MCTS: MOSS 2007, OCS 2007, Exchange 2007

Hi,Please view the Credential Caching part in the below link:http://technet.microsoft.com/en-us/library/bb794722.aspxAdditionally, another article is helpful to understand this issue:http://www.isaserver.org/tutorials/LDAP-Pre-authentication-ISA-2006-Firewalls-Part1.htmlThanksAllen