magixnetworks What changed in the 2 days between the first and second e-mails? Do SMTP2Go show any attempts from ITFlow to send anything?
magixnetworks Going through the code for mailing it does post an error into the database use mariadb on your server to run select * from logs; to see it, make sure to use itflow; first to select the right DB
wrongecho You can also adjust the email sending cron job to send output to logger, and then tail syslog / journalctl * * * * * root php /var/www/html/cron_mail_queue.php cronkey 2>&1 | logger -t itflow-nightlycron
joel Hi, I generated a new CORN kay and followed the document again, and it start working. Thanks everyone