Prism: Web apps running as Local apps

Today I downloaded and installed Mozilla Lab's Prism. It allows you to run web apps such as Facebook, Gmail, Google Calendar, or even Spiceworks as if it where a local application. It is a slimmed down Mozilla web browser that creates a nifty shortcut for you to use. You can then resize and move the window around as you would any other window.



It best feature is the lack of an address bar. It sounds weird but that can sometime be a big distraction. So now I can have my gmail open and my Calendar open all day long.

Microsoft Exchange 2007 Catchall Agent

For those of you looking to implement a Catchall agent in Microsoft Exchange 2007 I finally have an answer for you! CatchAllAgent Exchange2007 Transport Protocol Agent does everything I needed it to do. It can handle multiple domains and supports standard .Net tracing for troubleshooting. Granted I didn't write it but it is simple to set up and configure.

The download is not as straight forward as I would have liked (multiple files vs. a Zip file) but the instructions are clear and consise for installation. The bare minimum you need to download is the CatchAllAgent.dll, config.xml, and Readme.txt. The author has included the source code for the CatchAllAgent incase you want to see how it works or if you have enhancements to make. The one issue I had with installation was due to me not reading ALL of the instructions and missing a step ([PS] C:\catchallagent>enable-transportagent "CatchAll Agent").

There are many reasons to NOT have a catchall agent setup. For one you open yourself up to a Denial of Service attack because all email will now be accepted for your domain, which may also lead to the servers storage being filled. But when the CIO and CEO both say we NEED a catchall I fulfill their request and warn them of the dangers. Hopefully I never have to say "I told you so!"

Testing Outlook Web Access from the PowerShell

As any of my readers know I check things on a daily basis, typically in the morning. As part of these checks I fire up Internet Explorer 7 and go to our Outlook Web Access page and log in.

Today I figured out how to do all of this from a PowerShell, which has already cut my daily monitoring duties down about 90%. This is a pretty simple oneliner that will test one OWA url. It does however require you to enter a password in a dialog box.

Test-OWAConnectivity -url https://mail.yourdomain.com/owa -mailboxcredentials:)Get-Credential domail\user)

After you run that it will ask you for the password of the user and report back success or failure.

Spiceworks 1.7 Now Available

Spiceworks 1.7 is now available for download. The upgrade process is as painless as can be. Simply right click on the spiceworks tray icon and select restart. When the restart process is finished you will have the newest version.

Using the Powershell to check for mounted mailbox databases

If you want to quickly check to see what mailbox databases are mounted (or not mounted) there is a simple command that you can run from the Exchange Management Shell.

Get-Mailboxdatabase -status | where {$_.Mounted -eq $true}

To see what mailboxdatabaes are not mounted you can do:
Get-Mailboxdatabase -status | where {$_.Mounted -eq $false}

Let's break down what is going on here.
Get-MailboxDatabase will generally just return the list of mailbox databases in the organization.
The -Status switch will tell the command to get the status (Mounted, Last Full backup, et cetera).
We then pipe this into the where command to do the searching. The variable we are looking for here is Mounted and we need it to be equal (-eq) to True ($true).

Microsoft Exchange 2007: Autodiscovery

An interesting thing I learned with Exchange 2007 and Outlook 2007, If you are running the latter than Exchange 2007 must have Autodiscovery installed and configured properly. Microsoft Technet has a decent article on how to set up and properly configure Autodiscovery.

It is importent to note that autodiscover.yourdomain.com has it's own seperate SSL certificate for things to work properly. This is an additional certificate to the one Outlook Web Access and Outlook Anywhere require to work properly.

How to: Fix Background Cleanup Errors

During my morning checks of the servers I run the command Test-Systemhealth on my Microsoft Exchange 2007 server and I was getting the error "The 'Background Cleanup' value for mailbox store '[Mailbox Store Name]' on Server '[Exchange Server Name]' is missing. This will cause mailbox size discrepancies.

To fix this I found a Microsoft Technet Article "Background Cleanup interval for a mailbox store is missing". It supplies an easy fix for my problem.

Open a registry editor, such as Regedit.exe or Regedt32.exe.
Navigate to: HKLM\System\CurrentControlSet\Services\MSExchangeIS\\Private-

Create a DWORD value called Background Cleanup with value data of 60000 (decimal) or 0xEA60 (hexadecimal). Do this for each mailbox on the server.

Close the registry editor. To make the changes take effect, do one of the following:
Dismount and mount the affected information stores.
Restart the Microsoft Exchange Information Store service.