SmtpClientSimulator should throw on error rather than returning true/false
Renamed test classes (CamelCasing)
Moved AddRoutePointingAtLocalhost from SMTPClientTests to TestSetup since it's shared by many tests (minor)
Renamed oSMTP variable to smtpClientSimulator. (minor
Renamed oPOP3  variable to pop3ClientSimulator. (minor)
Renamed oSimulator1  variable to imapClientSimulator. (minor)
The number of TCP/IP connections were not counted properly, leading to slightly incorrect values on Status page (+1 or +2)