How to fix "warning: mail_queue_enter: create file maildrop Permission denied”

just fixed that for a customer and wanted to let you know about my findings:
First of all, stop postfix, check if it is still running, kill it if necessary and well here are the shell commands

  • systemctl stop postfix (old: /etc/init.d/postfix stop)
  • killall -9 postdrop
  • chgrp -R postdrop /var/spool/postfix/public
  • chgrp -R postdrop /var/spool/postfix/maildrop/
  • postfix check
  • systemctl start postfix (old: /etc/init.d/postfix start)

 

If that doesn´t help, you might also want to try:

  • /etc/postfix/post-install upgrade-permissions
  • /usr/sbin/postfix set-permissions 

Hope it helps!

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