12.04 & 12.10 serverguide for configuring SASL is outdated

The instructions in the "Configuring SASL" section of the Postfix page:

https://help.ubuntu.com/12.04/serverguide/postfix.html#postfix-sasl

describes changes that need to be made to the Dovecot configuration file /etc/dovecot/dovecot.conf, but in Ubuntu 12.04 the lines that need to be changed have moved to the configuration file /etc/dovecot/conf.d/10-master.conf.

Specifically...

The documentation currently contains the paragraph "Next you will need to edit /etc/dovecot/dovecot.conf. In the auth default section uncomment the socket listen option and change the following:", followed by this excerpt from the /etc/dovecot/dovecot.conf file that was included with older versions of Ubuntu:

  socket listen {
    [...]
    client {
      # The client socket is generally safe to export to everyone. Typical use
      # is to export it to your SMTP server so it can do SMTP AUTH lookups
      # using it.
      path = /var/spool/postfix/private/auth-client
      mode = 0660
      user = postfix
      group = postfix
    }
  }

The configuration lines above do not appear in the /etc/dovecot/dovecot.conf file that is distributed with Ubuntu 12.04's Dovecot packages.

In Ubuntu 12.04 the lines that need to be uncommented to configure SASL are found in the file /etc/dovecot/conf.d/10-master.conf:

  # Postfix smtp-auth
  #unix_listener /var/spool/postfix/private/auth {
  # mode = 0666
  #}

Please note that the default path for the socket in the 10-master.conf file is "/var/spool/postfix/private/auth". The "SMTP Authentication" section of this help page:

  https://help.ubuntu.com/12.04/serverguide/postfix.html#postfix-smtp-authentication

tells users to run this command to tell Postfix where to find the SASL socket:

  sudo postconf -e 'smtpd_sasl_path = private/auth-client'

but running this command will tell Postfix to look for a socket at "/var/spool/postfix/private/auth*-client*", which does not match the default socket path in the Dovecot configuration file 10-master.conf. In order to match the default Dovecot socket path "/var/spool/postfix/private/auth", the correct postconf command to use is:

  sudo postconf -e 'smtpd_sasl_path = private/auth'

---
Using Ubuntu 12.04, dovecot-[core|common] 1:2.0.19-0ubuntu1.

Problem with documentation discovered when the upgrade from 10.04 LTS to 12.04 LTS broke my SASL configuration.