The "telnet" client is a handy-dandy tool that lets you connect to any port you want (for example, HTTP port 80) and send and receive characters with the server on that port. It's great for troubleshooting SMTP problems, or verifying you can connect to an HTTP web server.
A "telnet" client's main purpose is to ... well, to do "telnet".
And it sounds like you don't have a telnet server running on your host.
Not surprising: telnet is NOT installed or enabled by default on most Linux hosts nowadays. Using "telnet" across the internet is dangerous - because your username and password are transmitted in clear text.
So if you want to use telnet in-house (I do all the time) - just install a telnet server and enable it.
And if you want to use telnet over the internet ... I strongly urge you to reconsider, and just use "ssh" instead.
IMHO .. PSM
Last edited by paulsm4; 08-21-2010 at 10:33 PM.