Sep 25 10:56:55 de4 dovecot[19707]: auth(default): shadow(****@domen.ru,8.250.71.50): unknown user
Sep 25 10:56:55 de4 dovecot[19707]: auth(default): passwd(****@domen.ru,8.250.71.50): unknown user
Sep 25 10:56:55 de4 dovecot[19707]: pop3-login: Login: user=<****@domen.ru>, method=PLAIN...