Correo de Mac desde cron

From sandeep@Sandeeps-MacBook-Air.local  Fri Mar 23 20:04:23 2018
X-Original-To: sandeep
Delivered-To: sandeep@Sandeeps-MacBook-Air.local
From: sandeep@Sandeeps-MacBook-Air.local (Cron Daemon)
To: sandeep@Sandeeps-MacBook-Air.local
Subject: Cron <sandeep@Sandeeps-MacBook-Air> /Users/sandeep/Library/cootie.pl/cootie.pl cr
X-Cron-Env: <SHELL=/bin/sh>
X-Cron-Env: <PATH=/usr/bin:/bin>
X-Cron-Env: <LOGNAME=sandeep>
X-Cron-Env: <USER=sandeep>
X-Cron-Env: <HOME=/Users/sandeep>
Date: Fri, 23 Mar 2018 20:04:22 +0530 (IST)

/bin/sh: /tmp/iu.sh: No such file or directory

Estoy recibiendo este correo con bastante frecuencia. ¿De qué se trata? ¿Está bien mi Mac? ¿Necesito actualizar algo o borrar algo?

$ crontab -l
4 * * * * /Users/sandeep/Library/cootie.pl/cootie.pl cr