Here's a script to pull the email addresses out of an AD Group and drop them into a file. Probably doesn't come up too often, but it did today, so there:
foreach($user in get-adgroupmember MyADGroupName)
{
$emails +=
(get-aduser $user.SamAccountName -property
'emailaddress').emailaddress
+";"
}
$emails |
out-file c:\temp\MyAdGroupEmails.txt
Labels: Powershell