Entourage Web Services Edition through ISA for RPC over HTTPS

[baef]

Version: 2008
Operating System: Mac OS X 10.5 (Leopard)
Processor: Intel
Email Client: Exchange

We are unable to get Entourage Web Services Edition to work correctly outside of our office through our ISA server. We have standard versions of Entourage 2008 working fine along with all of our Outlook clients. We are using Basic authentication in ISA to accomidate some older clients. Inside the office the connection is fine and through VPN it is fine but without it we get the error that it cannot connect to exchange with Error: 18597

What is the correct config for ISA to allow this and why would it not work when Oulook works fine?

 

[William Smith [MVP]]

We are unable to get Entourage Web Services Edition to work correctly
outside of our office through our ISA server. We have standard
versions of Entourage 2008 working fine along with all of our Outlook
clients. We are using Basic authentication in ISA to accomidate some
older clients. Inside the office the connection is fine and through
VPN it is fine but without it we get the error that it cannot connect
to exchange with Error: 18597

What is the correct config for ISA to allow this and why would it not
work when Oulook works fine?

An ISA server typically allows you to connect from your company network
to the Internet. It doesn't allow you to come back in to your network
from the Internet.

Outside the office you need to use your Outlook Web Access (OWA)
address, however, you shouldn't switch between addresses on a regular
basis because this will force all your messages to re-sync every time.

Try always using your OWA server address and see how well this works
inside and outside your network.

Hope this helps!

--

bill

Entourage Help Page <http://entourage.mvps.org/>
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[DanielT]

I am experiencing the opposite I cannot connect from within the office, but can connect from outside.
We use a ISA server to control access to the Internet.

 

[Corentin Cras-Méneur]

I am experiencing the opposite I cannot connect from within the office,
but can connect from outside. We use a ISA server to control access to
the Internet.

Could it be a DNS issue from inside? Can you use the IP address instead
of the name of the server?

Corentin