Using Telnet to determine "Expect on Connect" string

Telnet to the desired port on the host when you are certain it is working properly, and see what comes back. You can enter just an identifying portion of a SimpleExpect or Expect keyword.

For example, if you expect to get "220 Imail v1.3" back from the host, you could use "220 host" as a response string (i.e. SimpleExpect=220 host, or Expect=^220 host).

Note: Some services are based on binary protocols (such as DNS) and will not provide you with a simple response string to use. You can use a packet capture tool to view these types of responses.