Updated doc to mention using /usr/local/bin/bash instead of /bin/bash on FreeBSD/OpenBSD.

The shell script is written in Bash shell syntax, so neither /bin/sh nor /bin/ksh is ok (although ksh usually works fine).

That fix seems to have resolved my issue, thank you for this solution, and for all of the work that you do!

results in error: "/bin/sh: /bin/bash: not found"

Updated doc to mention using /usr/local/bin/bash instead of /bin/bash on FreeBSD/OpenBSD.

The shell script is written in Bash shell syntax, so neither /bin/sh nor /bin/ksh is ok (although ksh usually works fine).

rmdir: /var/vmail/imapsieve_copy/processing/spam: Directory not empty
rmdir: /var/vmail/imapsieve_copy/processing/ham: Directory not empty

Please note that in your excellent support documents for auto learn spam/ham crontab:

docs.iredmail.org/dovecot.imapsieve.html#setup-cron-job-to-scan-and-learn-spamham-messages

In the crontab section:

Run command crontab -e -u root to setup cron job for root user, scan emails every 10 minutes:

# iRedMail: Scan reported mails.
*/10   *   *   *   *   /bin/bash /etc/dovecot/sieve/scan_reported_mails.sh

results in error: "/bin/sh: /bin/bash: not found"

I think the crontab (for OpenBSD) might need to be changed to:

# iRedMail: Scan reported mails.
*/10   *   *   *   *   /bin/sh /etc/dovecot/sieve/scan_reported_mails.sh