SMTP Simulator

The SMTP Simulator project has been started due to a demand during a customer project. We needed a solution to test native transport of Exchange Server 2013 and third party addons to Exchange in a closed lab envrionment
DSN and NDR report types

Exchange and other MTAs use DSNs (Delivery Status Notifications) and NDRs (Non Delivery Reports) to notify the sender or sending MTAs (Message Transfer Agents aka Mail Servers) about the varioius statuses of a given email message.
