A TCP connection is established with the server IP address on port 119 (*).
Simple Failover waits for a "greeting".
If the greeting begins with 200 or 201 , (*) then the NNTP server is considered functional.
With any other greeting, the server is considered non-functional.
The TCP connection is closed.
While performing above steps, Simple Failover may also encounter a communications error (winsock error), or that the TCP connection is unexpectedly closed by the remote server, or it may time out waiting for the TCP connection to be established or a response to be received.
In any of these cases, the server is considered non-functional.
For details on the NNTP protocol, please see RFC977.
This and other RFCs can be obtained from .
(*) Alternate port number can be specified in the Port field. Alternate status codes can be specified in the Advanced Server Set Properties dialog.