Author: Steve Man

Scenario:  You need to find the Distribution Groups that a specific user is a manager of.

Resolution:  Run the following in Exchange PowerShell:

get-distributiongroup -resultsize unlimited | Where {$_.Managedby -like “*username“}

New CMDlet: Clean-MailboxDatabase in Exchange 2013
Command is Update-StoreMailboxState

Examples:
This updates the mailbox state for a mailbox located on the mailbox database DB01
Update-StoreMailboxState -Database DB01 -Identity GUIDof DB

Scenario:  A user has found a missing mobile device. While the device was missing, the user has initiated a remote wipe on it.  We want to prevent the remote wipe from occurring when the phone is powered back on.

Solution: Run this via Exchange Management Shell:

clear-activesyncdevice <identity> -cancel:$true

Note: I tried running the -cancel $true as stated in the article, but I received this error:
A positional parameter cannot be found that accepts argument ‘True’.  I replaced it with -cancel:$true

Microsoft Article Reference

Within Exchange Powershell, change the Directory to the scripts directory of your Exchange Install Location.  Run either of the following commands to rebuild the content index for a single database or all databases on a single server:

.resetsearchindex.ps1 -force <database>

or

.resetsearchindex.ps1 -force -all

The Exchange store uses write-ahead transaction logs and checkpoint files to help prevent data loss. Transaction logs record all the changes that have been committed to the in-memory database, while checkpoint files record which logged transactions have been written to the on-disk database files.

To check the last log file that has been written to the on-disk database, you can run the following in Exchange PowerShell. It will  provide the Checkpoint file that was last committed.  Any log files after that checkpoint file have not been committed to the on-disk database yet, where any log files prior have already been written and can be safely removed if manual purge is required.

Powershell:  ESEUTIL /MK C:FilePathDatabaseLogsE00.chk

Results:
Extensible Storage Engine Utilities for Microsoft(R) Exchange Server
Version 14.03
Copyright (C) Microsoft Corporation. All Rights Reserved.

Initiating FILE DUMP mode…
      Checkpoint file: E:DatabaselogsE00.chk

      LastFullBackupCheckpoint: (0x0,0,0)
      Checkpoint: (0x4E1617,80,0)      <– The log file may look like E00004E1617.log in the logs directory.
      FullBackup: (0x4D48C3,173,1E1)
      FullBackup time: 05/18/2014 06:01:36
      IncBackup: (0x4E0CB3,447,48)
      IncBackup time: 05/23/2014 05:04:41
      Signature: Create time:06/05/2012 15:17:03 Rand:89681821 Computer:
      Env (CircLog,Session,Opentbl,VerPage,Cursors,LogBufs,LogFile,Buffers)
          (    off,   2027, 101350,  16384, 101350,   2048,   2048,1804596)


Operation completed successfully in 0.32 seconds.


Reference