Hi Martin, Personally I do not use POP3 any more - however I remember that there was a limitaition of 1 connection per mailbox in other servers. May the reason be that some client software isn't properly closing the connection (no quit for example)? Or just lost connections due to the loss of internet connectivity (of the client)? I'd try to find out whether there are some old pop3 processes connected to that mailbox (you could extract that information from the logfile, or maybe easier using the cyrus proc files - the path depends on the compilation environment). Baltasar -- Baltasar Cevc _____ former 03 gmbh _____ infanteriestraße 19 haus 6 eg _____ D-80797 muenchen _____ http://www.former03.de ---- Cyrus Home Page: http://cyrusimap.web.cmu.edu/ Cyrus Wiki/FAQ: http://cyrusimap.web.cmu.edu/twiki List Archives/Info: http://asg.web.cmu.edu/cyrus/mailing-list.html