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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