IMAP Setup in outlook for mac

IMAP Setup in outlook for mac

Hi, I have set up IMAP mail on outlook for windows just fine and it works great but I tried to do the same for outlook for mac and I can't get it to work. I followed the same tutorial on this site with the same settings but it only receives not sends mail. 
I have searched online and the forums but cannot find a solution. 
I have attached screenshots of my settings and the error, as I say it receives mail but comes up with that error when I try to send.

Thanks for any help in advance.
Matt