I push get messages and popup says error with account rocketron48@comcast.net below that it has yellow triangle and says sending of username did not succeed. mail server mail.comcast.net responded: says internal server error and I click OK then it says login failed...login to server mail.comcast.net failed and 3 options pop up 1-RETRY......next to....2-Enter New password...next to...3-Cancel. I tried clicking on Retry and it goes right back to internal server error and hit OK and repeats cycle. I tried clicking on enter new password and I put a new one and and the same thing happened. I tried hitting the cancel and that didn't help. When I click on get mail down in the lower left corner it says rocketron48@comcast.net: Host contacted, sending login info... normally it would say how many emails I received and I'd get an icon(envelope) in upper right corner telling me I have new emails. I don't know how you respond because I can't get any incoming emails on my Mozilla account. If you email my Yahoo email in box I can get emails there. Rocketron28@yahoo.com. That should work as I sent a message from Mozilla email to yahoo and I got it. Just can't send from Yahoo to Mozilla inbox.