import-module Microsoft.Exchange.Management.PowerShell.E2010aTry with some implementation like:
$exchangeser = "MTLServer01"
$session = New-PSSession -ConfigurationName Microsoft.Exchange -ConnectionURI http://${exchangeserver}/powershell/ -Authentication kerberos
import-PSSession $session
or
add-pssnapin Microsoft.Exchange.Management.PowerShell.E2010