I have dug a bit into mbox fomat and looked at one system that has some
mail in root's mbox.
It SEEMs that what I am missing is a FROM: line at the beginning that
mutt can handle. Perhaps something like:
From cron@localhost Thu May 07 13:15:01 2020
Note no colon after 'From' and a timestam
First I made a script at /usr/sbin/mycron
#!/bin/sh
(cat; echo) >> /var/spool/mail/$USER
Then I changed cat /etc/sysconfig/crond
# Settings for the CRON daemon.
# CRONDARGS= : any extra command-line startup arguments for crond
CRONDARGS= -m "/usr/sbin/mycron"
And restarted crond
Next I cha