This script will add a list of users in a text file to Distribution group and output the results to a log file.

Import-Module ActiveDirectory ## Use AD Snapin
Add-PSSnapin Microsoft.Exchange.Management.PowerShell.Admin ## Use Exchange 2007 Snapin
$AdminSessionADSettings.ViewEntireForest = $true ##Search Entire Forest

Get-Content ‘C:\Userlist.txt’ | %{
$User = $_
Try {
Add-DistributionGroupMember ‘GroupName’ -Member $User -EA STOP
}
Catch{
Echo $User $_.exception.Message
}
} | Out-File C:\scriptlog.txt

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This script will create Exchange Mail Contacts from a list in a CSV File

Import-Module ActiveDirectory
Add-PSSnapin Microsoft.Exchange.Management.PowerShell.Admin
Import-CSV C:\ContactList.csv | ForEach-Object{
New-MailContact -Name $_.Name -ExternalEmailAddress $_.Email -OrganizationalUnit $_.OUpath
}

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The below script will show ActiveSync details for users in an OU, this script also only reports devices that have synced after a specified date.

Add-PSSnapin Microsoft.Exchange.Management.PowerShell.Admin

Get-Mailbox -ResultSize:Unlimited -OrganizationalUnit domain.local/OU | ? {$_.Organizationalunit -eq "domain.local/OU "} | ForEach {Get-ActiveSyncDeviceStatistics -Mailbox:$_.Identity} | Where {$_.LastSuccessSync -gt '01/01/2014'} | ft -AutoSize Identity,DeviceType,DeviceID,DeviceModel,LastSuccessSync

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This script will take a list of email address and return the users AD info, I have enabled View Entire Forest, in case your are in a multi domain environment.

Import-Module ActiveDirectory
Add-PSSnapin Microsoft.Exchange.Management.PowerShell.Admin
$AdminSessionADSettings.ViewEntireForest = $true
Get-Content C:\EmailList.txt | Get-Mailbox | FT SamAccountName,Alias,PrimarySMTP

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