Dump mail settings

<system.net>
   <mailSettings>
      <!--<smtp deliveryMethod="network" from="[email protected]">
         <network host="localhost" port="25" defaultCredentials="true" />
      </smtp>-->
      <smtp deliveryMethod="specifiedPickupDirectory">
         <specifiedPickupDirectory pickupDirectoryLocation="d:\maildrop" />
      </smtp>
   </mailSettings>
</system.net>