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Other site clients can't connect to internal Exchange server

Posted on 2010-01-05
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Last Modified: 2012-05-08
Hi,

I have some network problems.External site clients can reach and ping to internal site clients/servers but there is a problem in MS Outlooks.We can't add/configure email accounts,Ms Outlooks can't see exchange server(couldnt resolved user mailboxes/ exc.server name) but exchange server is pingable and Up.There isn't any problem when we make clients bypass ISA server 2004.

Our systems configuration is shown below.I am waiting for your assistance.Thanks


1 Internal Site 192.168.0.x
1 External Site 10.0.1.x

DC 192.168.0.1
Exchange 192.168.0.2
 
Sites connected with cisco Routers

(ExternalSite Clients)<----->Router2<=====>Router1<------>ISAServer2004(Rules:All networks to All networks is allowed)<--------->Internal W2K3 DC - Exchange 2003

All client's (external site) gateway is Router and preferred DNS is internal DC. Dc and Exchange server's gateways are ISA 2004 server.Exchange and Dc servers have persistent
route that  Network: 10.0.1.0  Gateway: Router1.
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Question by:inciralti
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4 Comments
 
LVL 51

Expert Comment

by:Keith Alabaster
ID: 26185177
So you are using a site-to-site VPN? Is this across the Internet or an MPLS?
You say the Exchange is pingbale - is that by IP address or by server name or both?
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Author Comment

by:inciralti
ID: 26188504
There is no problem on routers,i think the problem is ISA or routing tables on servers.Exchange is pingable by both ip and name.But service requests (from clients to exchange srv) are dropped by ISA server.
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LVL 51

Expert Comment

by:Keith Alabaster
ID: 26189042
OK - more details please.

Open the ISA gui - select monitoring - logging - click start query.
Exactly what messages are seen in the realtime log when the Outlook attempts to connect?
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Accepted Solution

by:
inciralti earned 0 total points
ID: 26193628
Thank you Keith,

The problem has been resolved with reconfiguring routers.

Have a nice day
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