Exchange 2010 - Alias Send As permission list Powershell command

Hi All-

Can somebody provide a Powershell command that will list aliases including distribution group aliases that contain the “Send As Permission” from other than Self and export to a .csv file

The below does most of this but does not include distribution group aliases.

Get-Mailbox | Get-ADPermission | where { ($_.ExtendedRights -like "*Send-As*") –and ($_.IsInherited -eq $false) -and -not ($_.User -like "NT AUTHORITY\SELF") } | Select Identity, User, Deny | Export-CSV test.csv

Thanks