Undoing the effects of set-casmailbox

The cmdlet set-casmailbox can be used to configure Outlook Web Access segmentation for individual users. As an example, you can disable the premium client for a particular mailbox through the following command:
set-casmailbox teod -owapremiumclientenabled:$false

However, what happens is that all the other segmentation features get disabled. You can see this by running the following command:
get-casmailbox teod format-list
*** OUTPUT*********************************
OWARemindersAndNotificationsEnabled : False
OWAPremiumClientEnabled : False
OWASpellCheckerEnabled : False
*********************************************
Behind the scenes, the set-casmailbox cmdlet is setting a value on the AD attribute, msExchMailboxFolderSet which controls mailbox segmentation. So, to reset this back to default, set this attribute to $Null, or Not Set either through ADSI Edit or through Powershell. Alternatively, you can enable all the settings by setting the value of msExchMailboxFolderSet to 2147483647.

In production, you should find out what segmentation settings you want for a particular subset of users, configure those settings on one user, and then copy the value from the attribute: msExchMailboxFolderSet, to all of the users that require segmented OWA.

Exchange 2007 Video Series

http://msexchangeteam.com/videos/default.aspx

Exchange 2007 SP1 SCC

I found a blog that details how to configure an Exchange 20078 SCC with iSCSI:
http://www.shudnow.net/2008/03/13/exchange-2007-sp1-scc-using-server-2008-starwind-iscsi-part-1/

Create Managed Distribution Groups through powershell

I recently had to create 85 managed groups; groups where users manage their memembership (instead of admins). I wrote a powershell script to create the groups, mail-enable them, set the managedby attribute, and associated AD permissions.

I created an csv with the following headings:
Alias , DisplayName, ManagedBy
*The ManagedBy field must contain a DN

Add-PSSnapin Quest.ActiveRoles.ADManagement
[array]$group_info = import-csv "C:\group_info.csv"
$group_info ForEach-Object {
$gname = $_.dispname
$gdesc = $gname
$gAlias = $_.Alias
$gsam = $gAlias
$gmanager = $_.managedby
$gmanager = "CN=De Las Heras\, Teo,CN=Users,DC=Company,DC=org"
#For Debugging, write out the variables (tab delimited)
# Write-Host $gname, `t,$gAlias, `t, $gmanager
$objOU = [ADSI]"OU=Groups,DC=Company,DC=ORG"
$gcn = "cn=" + $gname
$objGroup = $objOU.Create("group", $gcn)
$objGroup.Put("sAMAccountName", $gsam)
$objGroup.Put("groupType", "-2147483646")
$objGroup.Put("description", $gdesc)
$objGroup.Put("displayName", $gname)
$objGroup.Put("mailnickname", $gsam)
$objGroup.put("managedby", $gmanager)
$objGroup.setinfo()
add-qadpermission -service 'servername' $gname -Account 'Company\tdelasheras' -Rights 'WriteProperty' -Property 'Member'
}

Powershell - Get status of Exchange databases

The Exchange Management Shell (EMS) provides a way to output the status of Exchange Databases through the command, get-mailboxdatabase. Note that you must include the -status switch in order to get the proper output.
get-mailboxdatabase select Mounted - will give you nothing.
The correct command is
get-mailboxdatabase -status Select Name, Mounted, LastFullBackup

I have a small script I wrote that get's the status of all the databases in my organization and sends me an e-mail if a database is dismounted. I have the script running as a scheduled task. Here it is:
**Save this a a .ps1 file ** It'll need to be signed as well

function Send-Mail
{
Param($sbj,$msg,$to,[switch]$html)
$SmtpClient = new-object system.net.mail.smtpClient
$MailMessage = New-Object system.net.mail.mailmessage
$SmtpClient.Host = 'relayserver'
$mailmessage.from = 'fromme@company.com'
$mailmessage.To.add($to)
$mailmessage.Subject = $sbj
if($html)
{
$mailmessage.IsBodyHtml = 1
$mailmessage.Body = $msg
}
else
{
$mailmessage.Body = $msg
}
$smtpclient.Send($mailmessage)
}

function exch-status {
get-mailboxdatabase -status %{$DBName = $_.Name; $DBMounted = $_.Mounted; $DBBackup = $_.LastFullBackup}

if ($DBMounted -eq $False )
{
$Message = "The database $DBName is unmounted. Please page Sys Admin immediately."
Send-Mail 'Exchange DB Unmounted' $Message 'copmpanyops@company.com'
}
$DateToday = Get-Date
if($DBBackup.day -lt $DateToday.day)
{
Message = "It's been 24 hours since a full backup completed successfully."
Send-Mail 'Full Backup has not run' $Message 'copmpanyops@company.com'
}
}

exch-status
****End of Script ****

Windows 2008 Step-by-Step Guides

http://www.microsoft.com/downloads/details.aspx?FamilyID=518d870c-fa3e-4f6a-97f5-acaf31de6dce&DisplayLang=en#filelist

Exchange Availability Service

Free/Busy Tutorial:
http://blogs.msdn.com/deva/archive/2008/10/13/tutorial-free-busy-data.aspx

The availability serive replaced the free/busy PF from Exchange 2003. To see how many availability services exist:
get-autodiscovervirtualdirectory

Basically, Exchange publishes the availability service through a Service Connection Point in Active Directory. The location of the Service Connection Point is in the serviceBindingInformation attribute on the following object:
CN=DC1,CN=Autodiscover,CN=Protocols,CN=DC1,CN=Servers,CN=Exchange Administrative Group (FYDIBOHF23SPDLT),CN=Administrative Groups,CN=Litware Inc,CN=Microsoft Exchange,CN=Services,CN=Configuration,DC=litwareinc,DC=com


Test the Exchange Availability Service:
Test-OutlookWebServices -id:user1@contoso.com -TargetAddress: user2@contoso.com

If the service is not functioning, it's easy to rebuild:
Remove-autodiscovervirtualdirectory
New-Autodiscovervirtualdirectory

Exchange 2007 - Healthy Configuration

Exchange 2007 System Requirements (note: Page File should be RAM + 10 MB):
http://technet.microsoft.com/en-us/library/aa996719.aspx

Memory Requirements (note: minimum memory / # of storage groups):
http://technet.microsoft.com/en-us/library/bb738124(EXCHG.80).aspx

Steps to mitigate excessive paging:
http://blogs.technet.com/mikelag/archive/2008/10/17/steps-to-help-mitigate-excessive-paging-and-working-set-trimming-issues.aspx