Get active users on Exchange Server

Get-LogonStatistics -Server MBXSVR01

Get-LogonStatistics -Server SERVER | Sort-Object LastAccessTime | fl *username,lastaccesstime*

Get-LogonStatistics -Identity mail@address.com

Get-LogonStatistics -UserName Uername

Get-LogonStatistics -Server SERVERNAME | select username, clientname, clientversion, logontime, lastaccesstime | Export-CSV C:\CAS.csv

Get-LogonStatistics -Server SERVER -Identity mail@address.com | Sort-Object LastAccessTime | fl *username,lastaccesstime*

How to list all SMTP email addresses in Exchange

Get-Recipient | Select Name -ExpandProperty EmailAddresses | Select Name, SmtpAddress | Export-csv c:\temp\AllEmailAddress.csv