I try to send messages on craigslist but it said I need my email server's name? Where is this info?

this is really frustrating me!

I try to send messages on craigslist but it said I need my email server's name? Where is this info?
This is an easy one! just highlight and copy the craigs list address, Open your email server aol, yahoo. gmail.etc... Paste the address into the address bar and type your message into the message area. Good Luck!