Unable to establish secure connection...

[J. M. De Moor]

I know there has been a lot written about this issue but I am still unable
to open Entourage without getting the "Unable to establish secure
connection...because the correct root certificate is not installed." Here
(after reading countless white papers, howto's, KBs and newgroups) is what I
did. Any idea why I still get the message?

OS X Tiger (10.4.3)
Entourage 2004 (11.2.1)
SBS 2003 Premium named: myserver.mydomain.office (e.g.)

1. Opened Safari to access OWA and test DNS:
https://myserver.mydomain.office/exchange. Got the warning message and
selected always trust this source. Opened Keychain Access and saw that
myserver.mydomain.office was listed as a valid certificate.

2. Opened Entourage and manually setup account:
Account ID: [Login ID to my server]
Password: [Password associated with this login]
Domain: MYDOMAIN
Checked "Save password..."
Exchange Server: https://myserver.mydomain.office/exchange
Checked "This DAV service requires...(SSL)"
Public Folders Server: https://myserver.mydomain.office/public
Checked "This DAV service requires...(SSL)"
LDAP server: https://myserver.mydomain.office
Checked "This server requires me to log in"
Default LDAP port 3268

3. Re-opened Entourage and got the "Unable to establish..." message.

4. Connected to server share smb://myserver/ClientApps. From the SBScert
folder, dragged sbscert.cer to the KeyChain Access icon in Finder. Selected
X509Anchors. Got a message that this certificate already existed. (I tried
this anyway in case step 1 didn't actually accept the certificate.)

I still get the message when opening Entourage. This shouldn't be this
tough.

Joe