MAILBOX ADMINISTRATION

Message Queue Totals

Get a total count of messages in your queue(s):

Get-ExchangeServer | Where {$.IsHubTransportServer -eq "true"} | Get-Queue | Where {$_.Deliverytype -eq "MapiDelivery"} | Select-Object Identity, NextHopDomain, Status, MessageCount

Per-Mailbox Outbox Items

Checking the outbox of your users' mailbox is also a good indicator to see if messages are stuck going outbound:

Get-Mailbox -resultsize unlimited | Get-MailboxFolderStatistics -folderscope outbox | Sort-object foldersize -Descending | Select-Object Identity,Name,Foldertype,itemsinfolder,@{Name="FolderSize MB";expression={$_.folderSize.toMB()}}

Check for Mailbox-Level Send/Receive Restrictions

Get-Mailbox -ResultSize unlimited | Format-Table Name,MaxSendSize,MaxReceiveSize

Export Mailbox to .PST:

Use the following to export a mailbox to a .PST file:

New-MailboxExportRequest -Mailbox user -FilePath "\\fileserver\mailboxgraveyard\user.pst"

Track the progress of your export request with: Get-MailboxExportRequest

List Disconnected Mailboxes:

Get a list of the currently connected databases (Get-MailboxDatabase) and use the following command to see if there are any disconnected mailboxes:

Get-MailboxStatistics -Database "<DB NAME>" | Where-Object {$_.DisconnectDate -Notlike $NULL} | FL DisplayName, DisconnectDate, MailboxGuid

Once you have a mailbox you wish to remove, use the following command to permantenly remove it:

Remove-Mailbox -Database "<DB NAME>" -StoreMailboxIdentity <MAILBOXGUID>

List Mailboxes by Size

Here is a useful command to get user information for a given mailbox while sorting the output by the total size:

Get-MailboxDatabase | Get-MailboxStatistics | Select DisplayName, LastLoggedOnUserAccount, ItemCount, TotalItemSize, LastLogonTime, LastLogoffTime | Sort-Object TotalItemSize -Descending | Export-CSV C:\temp\mailboxes.csv

MESSAGE TRACKING

Message Tracking Export to .CSV

Use the following to get a CSV output of the Message Tracking logs based on a few basic parameters. This is a good way to track individual emails that fail to flow properly:

Get-MessageTrackingLog -Recipients:user@domain.com -Start "3/1/2018 1:00:00 AM" -End "3/14/2018 11:00:00 PM" | Select {$_.Recipients}, {$_.RecipientStatus}, * | Export-Csv C:\temp\user-emails.csv

OWA / ACTIVESYNC ADMINISTRATION

List ActiveSync Devices

List all ActiveSync devices and the corresponding mailbox/user:

Get-ActiveSyncDevice | Select-Object DeviceModel,FriendlyName,DeviceOS,UserDisplayName,Identity | Sort-Object DeviceModel | Export-CSV -Path C:\temp\activesyncusers.csv

You can get a list of devices by username with the following:

Get-ActiveSyncDeviceStatistics -Mailbox:"username" | Select-Object Guid,Identity,DeviceModel,LastSuccessSync | Sort-Object LastSuccessSync

If you want to delete one, you can simply: Remove-ActiveSyncDevice <GUID>

You can do this by running a command that will check for any device that have not sync'd in over 365 days. Generate this list with the following:

$OldDevices = Get-ActiveSyncDevice -ResultSize unlimited | Get-ActiveSyncDeviceStatistics | where {$_.LastSyncAttemptTime -lt (Get-Date).AddDays(-365)}

And to remove them completely, you can use this:

$OldDevices | foreach-object { Remove-ActiveSyncDevice([string]$_.Guid) -confirm:$false }

You can also take a look at a script I wrote to automate all of this. It will remove any ActiveSync devices that have not attempted to sync in 1 year, and it will also remove orphaned mobile devices (e.g. the mailbox doesn't exist or the user account is disabled). I run this quarterly to catch anything that might fall through the cracks.

(Find my most recent copy of ActiveSyncCleanup.ps1 on my GitHub)

List Enabled OWA Accounts

I recommend that every once in a while, you check to see if OWA is enabled for users it doesn't have to be enabled for:

Get-CASMailbox | Where {$_.OWAEnabled} | ft DisplayName,OwaEnabled

You can disable it on a per-user basis:

Set-CASMailbox -Identity appledeveloper -OWAEnabled $false

Or you can disable it against all mailboxes with:

$mbxs = Get-Mailbox; foreach ($mbx in $mbxs) { Set-CASMailbox -Identity $($mbx.Alias) -OWAEnabled $false }