Get-Mailbox -OrganizationalUnit 'MyDomain' | Set-Mailbox -MaxSendSize 10Mb Get-Mailbox | Where-Object{$_Name -like "*MyUser"} | Set-Mailbox -MaxSendSize 10Mb
Get-Mailbox -OrganizationalUnit 'MyDomain' | Set-Mailbox -MaxSendSize 10Mb Get-Mailbox | Where-Object{$_Name -like "*MyUser"} | Set-Mailbox -MaxSendSize 10Mb