Re: Cached Exchange mode, can it connect to FE
From: JustinNg (justinng_at_msn.com)
Date: 11/16/04
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Date: Tue, 16 Nov 2004 21:27:11 +0800
"David Hodgson" <david.hodgson@vianet.co.uk> wrote in message
news:cnaipo$ai0$1$8300dec7@news.demon.co.uk...
> Hi,
>
> I have a FE/BE exchange 2000 setup with mixture of Outlook 2003 clients.
> "POP3" email accounts for remote pc's and "Microsoft Exchange Server"
> email accounts for LAN clients. The FE server has an SSL certificate
> installed, Clients using "POP3" email accounts can successfully
> send/receive email when remote. The FE is in a DMZ and the BE is on the
> LAN.
>
> I want to be able to have the global address list downloaded to the POP3
> clients.
>
> I've had a look at this and it seems that within outlook 2003 the only way
> to get an offline address book downloaded is to have it in "Cached
> exchange mode". I really would like to use the "Microsoft Exchange Server"
> email accounts as they are way more flexible than the "POP3" email
> accounts. So I have changed one of the remote PC's to use the "Microsoft
> Exchange Server" email account instead of "POP3" email account. In doing
> so I came accross the following errors...
>
> when the remote PC is connected to the LAN (not remote), I set the
> "Microsoft Exchange Server" to the FE server, when you select "Check Name"
> the FE setting changes to the BE server. This will not do as when the PC
> is remote it cannot see the BE server.
>
> When the remote PC is remote and I insert the FE into the "Microsoft
> Exchange Server".I get the error "The name could not be resolved. The
> Operation Failed"
>
> Can a FE server authenticate an outlook 2003 client ? Is it my firewall
> settings ? What ports are required to be opened for authentication ? If I
> need to open LDAP 389 etc. and kerboros ports surely this will create a
> security risk? Is there a safe way to do this or am I barking up the wrong
> tree?
>
> any ideas ?
>
> Dave
>
Exchange2k FE servers only supports Internet protocols (HTTP,POP3,IMAP). You
cannot use them for MAPI connections.
These protocols including POP3 do not support address list downloads.
One option is to open LDAP TCP3268 or if you install SSL cert on your Global
Catalog server, LDAP over SSL TCP3269.
Exchange 2003 FE servers support RPC over HTTP(S) that supports MAPI
connections from remote. However, it requires Windows 2003 servers for
Exchange & GCs and Windows XP for clients.
Justin
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