http://www.open-a-socket.com Perspectives on Active Directory, Exchange and more Mon, 12 Jul 2010 02:47:05 +0000 http://backend.userland.com/rss092 en In a migration scenario it is sometimes useful to have a security and/or distribution Active Directory group in the target domain where the membership is comprised of migrated user objects.  Here's a Powershell 2.0 script that I put together that populates the membership of a group based on a specific ... http://www.open-a-socket.com/index.php/2010/07/12/powershell-script-to-add-group-members-based-on-sidhistory/ I had a problem in my lab environment yesterday when trying to fix a corrupted search catalog on one of my Exchange 2010 mailbox servers.  I knew the search catalog was corrupted because I was seeing the following events: Log Name:      Application Source:        ExchangeStoreDB Date:          21/06/2010 12:02:03 p.m. Event ID:      123 Task Category: Database recovery Level:         ... http://www.open-a-socket.com/index.php/2010/06/21/error-when-trying-to-fix-a-corrupted-search-catalog/ The other day I had to uninstall Exchange 2010 from a server with the CAS and Hub Transport roles.  It all went well until the point where it was uninstalling the Hub Transport role.  The uninstall then ground to a halt with the following error: Log Name:      Application Source:        MSExchange Configuration Cmdlet ... http://www.open-a-socket.com/index.php/2010/05/26/error-when-uninstalling-exchange-2010-from-server/ This is an updated version of the script that I wrote for Exchange Server 2007.  The new version works for both E2007, E2010 as well as environments where both versions coexist. Ok, so the script is a bit messy and could use some polish - but, hey, it works for me ... http://www.open-a-socket.com/index.php/2010/05/04/powershell-script-to-show-exchange-server-2010-build-information/ Some time ago I blogged about the Acctinfo2.dll tool and how unfortunate it was that a 64-bit version was not available.  Well, the good news is that you can now download a 64-bit version from here:  Acctinfo2_64bit.zip I have tested the DLL on both Windows Server 2008 and Windows Server 2008 R2 ... http://www.open-a-socket.com/index.php/2010/04/27/64-bit-version-of-acctinfo2dll/ You receive the following message when installing Update Rollup 3 for Exchange Server 2010: "Setup Wizard for Update Rollup 3 for Exchange Server 2010 (KB981401) ended prematurely because of an error. Your system has not been modified. To install this program at a later time, please run the installation again." In my ... http://www.open-a-socket.com/index.php/2010/04/23/setup-wizard-for-update-rollup-3-ended-prematurely/ Sometimes it's useful to pre-create computer objects in the correct OU before joining them to the domain.  This way, you know that they will immediately pick up whatever Group Policies have been assigned to the OU.  Of course, you can create the computer objects in AD manually using Active Directory ... http://www.open-a-socket.com/index.php/2010/04/13/powershell-script-to-pre-seed-computer-objects-in-ad/ It is sometimes useful to have the ability to populate group membership based on the OU in which the prospective members are located.  A good example of where this might be useful is with Fine-Grained Password Policy (FGPP) in Windows Server 2008 AD (and later).  FGPP does not have the ... http://www.open-a-socket.com/index.php/2010/03/28/powershell-ou-shadow-script/   A little while back I posted a Powershell 1.0 script to backup all the GPOs in a domain.  Now that Powershell 2.0 is available together with the Group Policy module it is much easier to script Group Policy tasks.  The attached script is basically a re-write of my ... http://www.open-a-socket.com/index.php/2010/02/25/powershell-20-script-to-backup-gpos/   The Get-MailboxStatistics cmdlet is great for showing a range of detailed information about the mailboxes in your organisation.  Sometimes you need to pare down the information to just the really useful stuff (such as mailbox size, item count, etc.) and push it to a CSV file.  Here’s one ... http://www.open-a-socket.com/index.php/2010/01/17/powershell-one-liner-for-gathering-mailbox-stats/