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User cannot connect Exchange Remotely

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User cannot connect Exchange Remotely - 16.Jan.2008 10:54:31 AM

Ente

Posts: 35
Joined: 13.Nov.2007
Status: offline

I have a user who is very mobile with his notebook and his connection is only stable when on the office network (same network as the Exchange 2007 server). When he takes his computer to any hotspot or other location he can browse the web but Exchange in Outlook 2007 hardly functions, if at all.

The symptoms include Outlook 2007 taking a long time (every minutes of disconnects/"trying to find exchange...") until it connects or it will just not never connect. I feel as if something is blocking the connection to Exchange in the form of routing the traffic but I'm clueless at this point.

Could it be a receive connector? I currently have 3:
1) one on port 25 for users on the internal network allowing Exchange and Anonymous users (TLS, Basic, Exchange, Windows authentication),
2) another on port 2525 for any network only allowing Exchange users (Basic authentication),
3) and the last one on port 587 for any network only allowing Exchange users (TLS, Basic, Exchange, Windows authentication).

This user was originally using Outlook 2003 with a POP3 account and I exported his pst, upgraded to 2007, then imported his pst into his Exchange profile. I have another Exchange user who was able to take their notebook home and use Exchange just fine, so at the moment I believe it to be an isolated problem.

Do some ISP's block Exchange? Am I missing some routing of some kind? Could an application be blocking outside connections?

I'm almost down to the point of creating a new profile, importing the old POP3 pst from a few months ago, and then establishing a new connection to the Exchange server.

Please help, this has been going on for way too long.

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RE: User cannot connect Exchange Remotely - 16.Jan.2008 11:29:43 AM

John Weber

Posts: 620
Joined: 20.Apr.2005
From: Portland, Oregon
Status: offline

Firstly, it is not a connector issue - those sit on the the HT role, not the CAS role.
Secondly, after the problem description, you mention that another user has Outlook Anywhere (OA) running with no issues - therefore the CAS is setup correctly.

So, does user #2 use VPN? or is their OL2k7 configured for RPC/HTTPS (Outlook Anywhere)?

If user #2 is OA on a trusted or public cert, then you have OL/OS issues on user #1 laptop.

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http://tsoorad.blogspot.com

(in reply to Ente)

Post #: 2

RE: User cannot connect Exchange Remotely - 16.Jan.2008 1:21:48 PM