Apr  5 18:20:44 8561f706506c dovecot: master: Warning: Killed with signal 15 (by pid=747 uid=0 code=kill)
Apr  5 18:50:13 8561f706506c dovecot: master: Warning: Killed with signal 15 (by pid=747 uid=0 code=kill)
Apr  5 19:00:07 570ec481fc2c dovecot: master: Warning: Killed with signal 15 (by pid=682 uid=0 code=kill)
Apr  5 19:13:10 570ec481fc2c dovecot: master: Warning: Killed with signal 15 (by pid=682 uid=0 code=kill)