To delete emails in Junk folder for all users, you can run
sudo doveadm expunge -A mailbox Junk all
To delete emails in Trash folder, run
sudo doveadm expunge -A mailbox Trash all
I think it’s better to clean emails that have been in the Junk or Trash folder for more than 2 weeks, instead of cleaning all emails.
sudo doveadm expunge -A mailbox Junk savedbefore 2w
Then add a cron job to automate the job.
sudo crontab -e
Add the following line to clean Junk and Trash folder every day.
@daily doveadm expunge -A mailbox Junk savedbefore 2w;doveadm expunge -A mailbox Trash savedbefore 2w
You also need to allow the www-data user to read certificate files by adding the following line.
@daily setfacl -R -m u:www-data:rx /etc/letsencrypt/live/ /etc/letsencrypt/archive/
To receive report when a Cron job produces an error, you can add the following line above all Cron jobs.
MAILTO="you@your-domain.com"
Save and close the file. And you’re done.
