I am using dovecot 2.2.27 with plesk 12 and I have made no modifications to the dovecot config. my log file frequently (but not always!) reports errors that /tmp/dovecot.imap could not be created. The errors don't appear for every imap connect but for about 5% to 10% of the time. I already attempted to solve the problem by adding the following line to /etc/dovecot/dovecot.conf but that did not remove the error: mail_temp_dir = /tmp So why does dovecot mostly work without errors but sometimes fails to create the /tmp/dovecot.imap? ..excerpt from /var/log/syslog... dovecot: service=imap, user=user1 at mydomain1.com, ip=[::1]. Error: Temp file creation to /tmp/dovecot.imap. failed: No such file or directory]: 1 Time(s) dovecot: service=imap, user=users2 at mydomain2.com, ip=[::1]. Error: Temp file creation to /tmp/dovecot.imap. failed: No such file or directory: 10 Time(s) --- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus