>>>Any suggestions on how to duplicate this behavior on my PC? So far, I find that if I use the wrong password or user name or the server IP, my VFP 9 code simply reports that connection failed. But I want to duplicate the Email Server being locked; just like my customers sometimes experience.
>>
>>Unplug the network cable. Supply a bad password. Add a zero to the port or servername. Any of the above should constitute a valid state of incommunicado.
>
>I don't have a network.

So you're running an email server on a single, isolated machine? That's a first.

>And when I change the port, password, username, the operation simply times out. And I don't get the Server Lockup condition that prompted the Switch To message.

Well, was worth a try.