Re: OWA transfers to home server with multiple 2003 servers

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From: Mark Arnold [MVP] (mark_at_mvps.org)
Date: 11/01/04 

Date: Mon, 01 Nov 2004 17:58:47 +0100

Forget everything you have currently in place.

Set up one or more Exchange 2003 Servers and configure them to be
"Exchange Front End" servers.
Configure all the other servers that host mailboxes to be Back End
Servers (which they will be by default anyway)
Create an A record in DNS called WEBMAIL and assign the IP address of
the Front End server
Tell everyone to go to webmail.domain.com/exchange
The Front End will correctly distribute the requests.
For FE/BE help:
http://www.microsoft.com/technet/prodtechnol/exchange/2003/library/febetop.mspx
neat tip:
http://www.msexchange.org/tutorials/OWA2003Forms-based-Authentication-default-domain.html
Help on redirecting
http://www.msexchange.org/tutorials/Securing-Exchange-Server-2003-Outlook-Web-Access-Chapter5.html

On Mon, 01 Nov 2004 16:31:56 +0000, Shevek <drshevek@gmail.com> wrote:

>We are currently upgrading from 5.5 to 2003 and have a problem with
>OWA access.
>
>Internally we have 4 servers:
>
>mailA
>mailB
>mailC
>mailD
>
>with DNS forwarders and host headers set up as:
>
>webmailA
>webmailB
>webmailC
>webmailD
>
>These are also published via RSA, ISA and SSL as:
>
>https://webmailA.ourcompany.com
>https://webmailB.ourcompany.com
>https://webmailC.ourcompany.com
>https://webmailD.ourcompany.com
>
>Situation 1: A user who's mailbox is on mailA goes to http://webmailA
>the server redirects to http://webmailA/exchange - all is well
>
>Situation 2: A user who's mailbox in on mailB goes to http://webmailA
>the server redirects to http://mailB/exchange - all is well as the
>internal DNS works fine
>
>Situation 3: A user who's mailbox is on mailA goes to
>https://webmailA.ourcompany.com
>the server redirects to https://webmailA.ourcompany.com/exchange - all
>is well
>
>Situation 4: A user who's mailbox is on mailA goes to
>https://webmailB.ourcompany.com
>the server redirects to https://mailb.ourcompany.com/exchange - which
>we have not (and do not want to) published externally so it breaks
>
>Firstly, is there any way to tell Exchange the alternate DNS of the
>other servers?
>
>Secondly, due to RSA requiring authentication for each server you try
>to access (we link to each webmailx via an SSL published intranet) a
>user has to log in twice to access their webmail, once on the intranet
>and once on the webmail. What we want to do is move the SSL intranet
>to the ISA on mailA and then have the webmail as /exchange on the SSL
>intranet. Obviously if the OWA is going to redirect to the home
>server's OWA this will still force an RSA logon to the new server. Is
>there any way around this.
>
>TIA

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