I tried it all and still no success. I'm not all into this program n smtp's so u know, lol. But, I have comcast for internet provider and also have comcast email as-well. i input the smtp.comcast.net on the smpt mail host, put in my user name and password, left "use secure connection" unchecked (even clicked on it to check it), "if server is down, attempt to send directly" checked, and typed in my default reply email as my hotmail email address to where I want the replies to go to. even did the comcast email as reply, and yet get the same message as stated on the first question.
I dont kno