On Fri, 2010-04-30 at 14:44 +0200, Pierre wrote: > Apr 30 13:46:49 <ip> dovecot: [ID 583609 mail.error] dovecot: child 4088 (imap) killed with signal 6 (core dumped) If you're still getting these, http://dovecot.org/bugreport.html explains how to get gdb backtrace. If you don't have gdb, this should also work: dbx .../imap core where