Dovecot configuration files

Details of the dovecot

Following is the example of Dovecot on Debian. You can see the lines that are added by the control panel. Dovecot 2 saves various configurations in the conf.d directory, if you run Debian, the full path is /etc/dovecot/conf.d/.


activate the file dovecot-passwd:

 !include auth-passwdfile.conf.ext

enable authorization withou encryption:

 disable_plaintext_auth = no

define encryption mechanisms:

 auth_mechanisms = plain login digest-md5 cram-md5


activate the file dovecot-passwd:

 passdb {
   driver = passwd-file
   args = scheme=CRYPT username_format=%Lu /etc/dovecot/dovecot.passwd
 userdb {
   args = username_format=%Lu /etc/dovecot/dovecot.passwd


use the mechanism in Maildir:

 mail_location = maildir:~/.maildir

enable the quota plug-in:

 mail_plugins = $mail_plugins quota


activate TLS:

 ssl = yes


activate quota plug-ins:

  protocol imap {
   mail_plugins = $mail_plugins imap_quota


socket for authorization (for dovecot-lda):

 unix_listener auth-userdb {
   mode = 0666

if Exim uses authentication through Dovecot:

   unix_listener auth-client {
     mode = 0660
     user = Debian-exim
     group = Debian-exim

if postfix uses authentication through Dovecot:

   unix_listener /var/spool/postfix/private/auth {
     mode = 0666


 protocol lda {
    mail_plugins = $mail_plugins quota sieve
  • quota - enable quota counting in dovecot-lda
  • sieve - enable sieve sorter plug-in in dovecot-lda (if sieve is activate in the panel)


enable quota in Maildir using values from dovecot-passwd

 plugin {
   quota = maildir:User quota

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