Friday, November 25, 2005

Controlling OWA 2003 Users' Logon Options

by Paul Robichaux, Exchange Editor,

Q: We want to control which options users have when they log on to Outlook Web Access (OWA) 2003. What's the best way to do this?A: The answer depends on exactly what you're trying to accomplish by limiting users' options. When users connect to OWA 2003 via Microsoft Internet Explorer (IE) for Windows, the OWA logon screen gives users two options: whether to use the Premium or Basic client interface and whether to log on from a public or private computer.If you want to control whether users can pick their client type, you have a couple of choices. First, be aware that OWA automatically detects the browser with which a user connects. If that browser is anything other than IE 5.01 or later for Windows, users don't get the option to choose a client type. For example, Mac OS X users running Apple Safari never see the Premium and Basic radio buttons. If you're trying to let non-IE users choose a client type, there's no way to do so. Second, you can use OWA segmentation to control which client types are available to users. By setting the appropriate flag value, you can force all users to get the Basic client experience. Segmentation also gives you finer-grained control over other features. For example, you can turn off all access to individual folder types (e.g., Calendar), disable individual features (e.g., Secure MIME--S/MIME--support, spell checking), and otherwise control what users can do once they log on. For more information about segmentation, see the Microsoft article "How to modify the appearance and the functionality of Outlook Web Access by using the segmentation feature in Exchange 2003" ( ).If you want to control access from public or private computers, you can set timeout values that control how long sessions from each type of computer will remain active. To do this, set the PublicClientTimeout and TrustedClientTimeout values (under the HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\MSExchangeWeb\OWA registry subkey) to the number of minutes you want to apply to each timeout.In both cases, you can also modify the logon.asp form to restrict users' options. This is the most flexible route; by changing what appears on the logon page, you get ultimate control over which options users can choose (and over what the logon screen looks like--an important issue at some companies). The Microsoft white paper "Customizing the Outlook Web Access Logon Page" ( ) will guide you through the process of using JavaScript to customize the logon page. Remember that any customizations you make will be overwritten when you install Exchange Server service packs.

Thursday, November 10, 2005

A Broken OWA or A Corrupted IIS

One of the unfortunate things that exchange administrators face from time to time is to have a broken OWA.
A broken OWA can be an indication for IIS courpption, Exchange depends heavily on IIS, not only for OWA but also for SMTP.

I will suggest trying the following; reset the virtual directories that are required to provide Outlook Web Access, using the step described in the article below

If the above wont work for you and no fix was provided to solve your specific problem, then the only solution will be to reinstall IIS which means reinstalling exchange also.;%5BLN%5D;320202

Monday, November 07, 2005

How to Determine Exchange Server Edition ,Version and Build number


Exchange 5.5
Check the event log for one of the following Event IDs will be logged to the Application Log when the Information Store service starts up

1216 is logged if the server is running the Standard Edition.
1217 is logged if the server is running the Enterprise Edition.

The above applies to all Exchange editions.

Exchange 2000

If you are running Exchange 2000, there is a very quick way. Simply open Exchange System Manager, and drill down to your actual server object. Right-click the server, choose Properties, and on the General tab, see if you have ‘This is a front-end server'. This option is only available in the Enterprise Edition of Exchange 2000.

Exchange 2003

Since Exchange 2003 Standard Edition can now be a front-end server, that's not a reliable method if you are running Exchange 2003

1. If you have more than one storage group (SG), more than one message database, or if your database is greater than 16GB (75GB if running SP2), you have Exchange 2003 Enterprise.
2.Another way to verify your Exchange edition is to open the Exchange Server Setup Progress.log file, which is located on the root of your system drive. Search for one of the following entries:

[16:53:50] This is a(n) Standard version of Microsoft Exchange Server


[16:53:50] This is a(n) Enterprise version of Microsoft Exchange Server

3. Check the event log for one of the following Event IDs will be logged to the Application Log when the Information Store service starts up

1216 is logged if the server is running the Standard Edition.
1217 is logged if the server is running the Enterprise Edition.


1.Start Exchange System Manager (Exchange Server 2000 and later) or Exchange Administrator (Exchange Server 5.5 and earlier).

2.Click the Servers object for the Administrative Group or Exchange Site to which the server belongs.The Server Version column lists information for each server in the group.Note For Exchange Server 2000, the version is 6.0; for Exchange Server 2003, the version is 6.5.

You can use the Exchange monitor to see the version and build numbers of the Exchange Servers.
For further details of using the Exchange monitor visit

Build numbers and release dates for Exchange Server

Thursday, November 03, 2005

Messages Size Limits

There are many places to set the message size limit in exchange. Miss configuring any of those will affect all the others as the most restrictive setting applies.

Mainly there are 4 levels

* Global settings
* The connector.
* SMTP Virtual server
* The individual user level

Here are some articles about this issue, while reading them you will get confused; having a look at the examples at the end will help a lot.


Wednesday, November 02, 2005

Microsoft Exchange Server Analyzer Tools

New tools and new version of some old tools

Windows Live

Still in Beta, but many new features worth trying.
Having your favorites on any pc isn’t a bad idea :)

enjoy !

Out of disk space !!!

had this problem in one of our branches , here are some useful links to solve this in case it happens to you.