After re-installing my Zeek hosts to version 3.0.2 in my home lab, I haven't received any mail from cron task or any process/alert related to Zeek. But I see some emails queued in /var/zeek/spool/tmp directory like this:
-rw-r--r--. 1 zeek idps 296 Feb 27 07:30 mail.1493.tmp
Thanks for your answer Justin. All my zeek hosts are installed with postfix (they are under RHEL 8.1). I am searching about an equivalent command with postfix but I can’t find any….
Ok, running “sendmail -t -oi /var/zeek/spool/tmp/mail.1493.tmp”, does not return anything and email is not sent… and sendemail requires “from” and “to” options. Putting these options, it works …