For en liste over alle mail adresse

Get-recipient -resultsize unlimited | select name -expand emailaddresses | select name,smtpaddress

For en liste over alle mail adresse på et given domæne

Get-Recipient | Where{$_.EmailAddresses -match "it-grp.dk"} | select name -expand emailaddresses | select name,smtpaddress | where {$_ -match "kennethdalbjerg.dk"}