ERROR : Connection dropped by imap-server


I’m getting this message when I try to access one of my email accounts through webmail. I’m also not getting mail delivered to my IMAP client. Yet the control panel shows that there is some email there (.59mb) but there’s no way to access this mail. I’ve also noticed that when I sent mail it doesn’t get returned to me. So I know it must be resting somewhere.

Anyone seen this beore? Ideas?