Exchange OWA CAS1 redirect CAS2

[n0t]

Hello Guys,

 

Check this scenario:

 

I have 2 CAS server - CAS_1.mydomain.xx and CAS_2.mydomain.xx - they're both exchange server 2010.

 

The clients access to OWA using an external address https://www.my_external_adress.xx/owa - this address redirects to the principal CAS (CAS_1).

Internly they access using https://cas_1/owa or https://cas_2/owa . But when a client from CAS_2 try to access throught https://cas_1/owa , OWA just can't redirect.

 

This causes trouble because when clients from CAS_2 try to access on the external adress it says: "A server configuration change is temporarily preventing access to your account. Please close all Internet Explorer windows and try again in a few minutes. If the problem continues, contact your helpdesk." And if i try access from https://cas_2/owa with a client from CAS_1 give the message "Outlook Web App isn't available. If the problem continues, please contact your helpdesk." On CAS_2 I don't have an external adress configured.

 

Is this a problem with the certificates? Permissions? no clue

 

n0t.

[Andersson]

Hi

 

Have you read through this link?

http://technet.microsoft.com/en-us/library/bb310763.aspx

 

It will give you all details about redirection and proxying..

Hope it will help you

[n0t]

Hi

 

Have you read through this link?

http://technet.microsoft.com/en-us/library/bb310763.aspx

 

It will give you all details about redirection and proxying..

Hope it will help you

 

yeah, read it a thousand times

 

 

Request
Url: https://cas_01.mydomain:443/owa/ev.owa?oeh=1&ns=HttpProxy&ev=ProxyRequest
User host address: x.x.x.x
User: account_user
EX Address: /o=zzzzzzz/ou=Exchange Administrative Group (FYDIBOHF23SPDLT)/cn=Recipients/cn=account_user
SMTP Address: account_user@mydomain
OWA version: 14.1.270.1
Second CAS for proxy: https://CAS_02.mydomain/owa

Exception
Exception type: Microsoft.Exchange.Clients.Owa.Core.OwaProxyException
Exception message: The CAS server is most likely not configured for SSL (it returned a 403)

[Andersson]

Hi

 

Give us the full details about the setup and configuration

How many servers? Roles installed? Patch level etc

 

Run these commands and post the results

 

get-OwaVirtualDirectory | fl

[Dhydier]

What about an Exchange CAS Array?

http://blogs.technet.com/b/omers/archive/2010/10/11/microsoft-exchange-2010-cas-array-steps-and-recommendations.aspx