Error Scheduling new appointments with Outlook 2003 using RPC over HTTP

C

Chris

I'm connected to my Exchange 2003 server using Outlook
2003 (RTM Code) using
RPC over HTTP. When trying to schedule a new
appointment, I get the following error:
"The connection to the Microsoft Exchange Server is
unavailable. Outlook
must be online or connected to complete this action."

Outlook is connected...I can send and receive mail
without any problems.
Synchronizing also seems to happen without any problems.
I can edit
existing appointments without any problems. I also get
the same error when
adding new contacts, existing contacts can be edited
without error.

If I use Outlook when connected to the same LAN as my
Exchange server
everything works normally.

Any suggestions?

Thanks!
 

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