Hi Jim, Jim Knuth wrote: > Jul 25 11:03:01 server2 dovecot: lmtp(25638): Fatal: master: service(lmtp): child 25638 killed with signal 11 (core dumps disabled) You should try to get a core dump and a gdb backtrace with debug symbols package installed. The following article describes how to get one: http://www.dovecot.org/bugreport.html Regards Daniel