As a consultant I often test SMTP connectors on Exchange. There are several ways of doing this. There is the good old way of using telnet, ExchangePro has a great article describing the Telnet way of testing you SMTP connection: http://exchangeserverpro.com/how-to-send-email-via-telnet The other way of testing if a SMTP connector works on Exchange (2007/2010), could be using PowerShell. In PowerShell 2.0 there is a builtin cmdlet cmdlet: Send-MailMessage You can run the following command in PowerShell to do some mail…