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Outlook very slow to open over Cisco 851 VPN

Posted on 2013-01-15
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Last Modified: 2013-08-20
Hi, I have setup a VPN between Cisco PIX 515E and Cisco 851, everything is working well except Outlook. When I open it it takes very very long time to open, once opened it works well.

EXCHANGE 2010 (PIX515E) ---- VPN ---- (Cisco 851) OUTLOOK 2007.

Any help will be appreciated.
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Question by:arefone
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by:strivoli
ID: 38781657
Is Outlook configured in cached mode? I expect Outlook connects to Exchange using an Exchange account, not PO3/IMAP4/..., right?
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by:arefone
ID: 38781761
Not in cached mode, for security policies I wouldn't configure it in cached mode.

Yes it is an exchange account.
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Expert Comment

by:strivoli
ID: 38781782
What's the ping delay from client to server?
There's no security reason why you shouldn't use cached mode. Cached mode is useful when operating on a LAN at 100Mb and is quite mandatory when operating over a WAN at XDSL speeds. I respect your policies. Please try only once to set an Outlook/Exchange profile using cached (performance isn't fine till cache is completed - usually takes a long time and starts first time you run Outlook). You will get a comparison and then you can decide if you should continue using non cached or switch to cached.
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arefone earned 0 total points
ID: 38781895
The security reason is to avoid desplaying emails without inserting the password, in cahced mode I saw that you can see the old emails in the inbox before you insert the password to download the new emails.
I did solve the problem by adding the hostname of the Exchange server in the "hosts" file in C:\Windows\system32\driver\etc\hosts, I put the exact name that Outlook see in the account settings --> Exchange server name field.
Thank you.
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Author Closing Comment

by:arefone
ID: 38798144
I solved it and now it is working as a charm.
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Expert Comment

by:cbumatay
ID: 39423620
Arefone,
Can you elaborate on what your entered in teh hosts file?
I'm experiencing slow outlook issus over VPN now.
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