As a long time CentOS user, I’ve always winced when I took ownership of new systems with e-mail notifications enabled. Whether this was through setting MAILTO to a distribution list, or using the default and sending it to the user who created the job. Having cron send mail has woken me up more than once when /var/spool/* filled up. Give the awesome searching capabilites that come with solutions like Elasticsearch, Loki, and Gray log, I now turn cron mailing off on all of my systems.
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