create a file in /root
#cd /root
#cat rmail.sh
#!/bin/bash
/cd /var/spool/exim/input;
rm -rf *;
#sh rmail.sh
Then add this entry in your cron tab
#crontab -e
0 0-23/2 * * * /root/rmail.sh >/dev/null 2>&1
Then save the file.
it will help you to solve your issue
cara lain nya
0 0 2 * * /scripts2/killeximq >/dev/null 2>&1