I was getting e-mail from my pop3 accounts and also my company's exchange service just fine until a couple of weeks ago. Now I get an error message about pppo(?) and bluetooth. It also says something about connecting to Imap mail, which as far as I know I don't have. My company's email settings look as if they have disappeared.

I want to change settings but don't know where to go. I cannot find a control panel or preferences or settings page. Do I have to put in the e-mail accounts all over again?