Dovecot file 30-dict-server.conf is not suitable for mariadb installations

[mirtouf]

The file 30-dict-server.conf is not suitable for installations which runs mariadb-server as it contains a pgsql section:

  pgsql %dbhost {
    parameters {
      port = %dbport
      dbname = %modoboa_dbname
      user = %modoboa_dbuser
      password = %modoboa_dbpassword
    }
  }

An alternative file for mariab shall be proposed.