Unable to access user mailbox in outlook. saying the information store could not be opened

Hi,

I have an interesting problem at the moment. I have an user/mailboxes ie Administrator, setup in exchange 5.5 which i can access through outlook on a local network desktop no problems.

However if i try to access the same Administrator mailbox from the exchange server i get the message the information store could not be opened.

Also if i VPN into the network the same issue occurs. The thing i am not sure of here is the LAN is a 192.168.0.0 network and the VPN provides an IP of 192.168.2.3 with a gateway of the same IP. I am also able to ping the exchange server on the network from the the computer connected via VPN and in the outlook settings able to connect to it as well, just cant seem to get any further than that and this is obviously doing my head in. Any suggestions would be welcome.
DeonTAsked:
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mburdickCommented:
What user account is the mailbox associated with? Are you logging in to the system as that user? If not, you will need to set the Security parameters differently in the Outlook client so that it will prompt you for the username and password for the particular mailbox.
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DeonTAuthor Commented:
In this instance I am longing in with Administrator on the local domain and getting the enter password prompt where i put in user, pass and domain. the client i am vpn in with is a separate domain and hence i do think it is something to do with permissions but yet still cant seem to pin point it and also this doesnt explain why i can log into outlook with the administrator username from the exchange box itself - it is outlook 97 but i wouldnt have thought that would make a difference.
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mburdickCommented:
The first to understand is Exchange Permissions. If you launch the Exchange Administrator and click on the Organization name (top of the tree) and click the Properties button, you will be able to see the permissions assigned here. A default installation will have only one account listed - the service account used during the installation. Check to see what accounts or groups have permissions on this container, the Site container, and the "Configuration" container. Any account with Service Account Admin Permissions can open any mailbox.

The next thing that you need to look at is the domain "awareness" of the client operating system. Obviously, the XCH server knows about the domain. What about the other Operating Systems you are using? What OS are they? Are they part of the domain? A workgroup? Are they configured to use your DNS and WINS services? And, yes, you will likely need to be running WINS...

If the client OS doesn't understand the domain's location, it can't authenticate you. And, if you're using 9x clients, the machines need to be part of the domain since they don't understand things like "trusts".
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