I am running Windows 7 and have done so for about eight years without problems. Suddently, today, my email ceased to function. I can in fact create an email, but when I send it, it disappears completely. I get no 'unable to deliver' message, so goodness knows what happens to it. I went to my Webmail control panel and found the attached message asking me to change the Port settings. I haven't a clue about this, and don't know where to begin. Any advice appreciated.