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Outlook Over the Internet

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Outlook Over the Internet - 11.Jun.2004 6:51:00 PM   
DeHarvy

 

Posts: 1
Joined: 11.Jun.2004
From: New York
Status: offline
I have just completed the installation of Microsoft Exchange Server 2003 on a Windows 2000 Server.

From the Internal LAN, the mail accounts are working fine and the e-mail is flowing in and out.

However, from an external office, I can not connect mail accounts over the Internet.

Unfortunately, there is no VPN set up, but the mail server is accessible via the Internet.

Why isn't it working?

I keep getting error messages "The set of folders can not be opened" or "Unable to expand the folder. The set of folders could not be opened." when I try to open public folders.

It also says that the Exchange server is unavailable.

What am I doing wrong?
Post #: 1
RE: Outlook Over the Internet - 11.Jun.2004 7:38:00 PM   
Henrik Walther

 

Posts: 6928
Joined: 21.Nov.2002
From: Copenhagen, Denmark
Status: offline
Check below MS KB's:

280132 - XCCC: Exchange 2000 Windows 2000 Connectivity Through Firewalls

270836 - Exchange 2000 and Exchange 2003 Static Port Mappings

155831 - XCCC: Setting TCP/IP Ports for Exchange and Outlook Client Connections Through a Firewall

For the sake of security it's recommended to publish MAPI over RPC through an ISA Server, also remember your ISP needs to support this.

(in reply to DeHarvy)
Post #: 2
RE: Outlook Over the Internet - 13.Jun.2004 12:23:00 AM   
crystalfusion

 

Posts: 61
Joined: 7.Jun.2004
From: Seattle
Status: offline
I would recommend going with Windows 2003 Server and using RPC over HTTP with Outlook 2003 so you wouldn't have many of these security holes in your network. It may be a hard option to swallow after you just set this up, but it would make a world of difference once it is done.

(in reply to DeHarvy)
Post #: 3

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