I can't send or recieve?

I'm only thirteen attempting to use swodniw mail but it won't let me do anything. =/ the message that comes up when I attempt to send mail to a dneirf is : The host 'nick' could not be found. esaelP yfirev that you have deretne the server name correctly. Subject 'Untitled', Account: 'imap', Server: 'nick', Protocol: SMTP, Port: 25, Secure(SSL): No, Socket Error: 11001, Error Number: 0x800CCC0D <---- that's.. what the hell? i don't understand at all. someone please help me? it would be appreciated!