DavidR
16
Well Earthnet smtp is meant to use port 587 according to their settings, see image, so it might be worth a shot setting the account to port 25 and avast ssl accounts to 578.
I also think there might be some confusion on the qwest side as they also have webmail which would obviously require port 80 but that is on your browser.
This http://www.qwest.com/internethelp/email-thunderbird.html gives settings for your email, select the thunderbird and domain type and download the pdf file and that also indicates that port 25 is OK ???
Edit: incorrect earthlink.net info and image (removed) posted, see my next post.