I am trying to get a csv file of all users in a Live@edu environment with a LastLogonTime, but I am having some issues here is my script:

 foreach ($i in (Get-Mailbox -ResultSize unlimited)) 
      { Get-MailboxStatistics -LastLogonTime $i.DistinguishedName | where {$_.LastLogonTime} | select-object MailboxOwnerID,Name,LastLogonTime | export-csv -path "c:\filepath\UserLastLogon.csv" } 

I get the error:

 A positional paparameter cannot be found that accepts argument       '[email protected],OU=domain.edu,OU=Microsoft Exchange Hosted Organizations,DC=prod,DC=exchangelabs,DC=com'.

+Category Info: InvalidArgument: (:) [Get-MailboxStatistics], ParameterBindingException +FullyQualifiedErrorId : PositionalParameterNotFound,Get-MailboxStatistics

Any help would be great!