dovecot - Aug 2013 - multiple passdbs and auth sockets

I have a few systems which run dovecot 1.x as the authentication backend 
for Postfix, with multiple auth { } sections like this one, each one 
with a different passdb and its own socket:

auth ldap-10 {
  passdb ldap {
    args = /etc/dovecot/dovecot-ldap-10.conf
   }
  socket listen {
    client {
      path = /var/spool/postfix/private/auth-10
      mode = 0666
    }
  }
}

I need multiple sockets tied to multiple dbs because there are duplicated 
accounts, but after switching to dovecot 2.1.7 apparently *all* passdbs 
are checked and dovecot reports this message:

Warning: Obsolete setting in /etc/dovecot/conf.d/auth-local.conf.ext:91: add
auth_ prefix to all settings inside auth {} and remove the auth {} section
completely

doveconf shows that all my custom sockets are now part of a single 
"service auth { }" section, while all the passdbs appear at the top 
level.

How can I update my configuration for dovecot 2.x?

-- 
ciao,
Marco

On 8.8.2013, at 18.53, Marco d'Itri <md at Linux.IT> wrote:
> I have a few systems which run dovecot 1.x as the authentication backend 
> for Postfix, with multiple auth { } sections like this one, each one 
> with a different passdb and its own socket:
> 
> auth ldap-10 {
>  passdb ldap {
>    args = /etc/dovecot/dovecot-ldap-10.conf
>   }
>  socket listen {
>    client {
>      path = /var/spool/postfix/private/auth-10
>      mode = 0666
>    }
>  }
> }
> 
> I need multiple sockets tied to multiple dbs because there are duplicated 
> accounts, but after switching to dovecot 2.1.7 apparently *all* passdbs 
> are checked and dovecot reports this message:
> 
> Warning: Obsolete setting in /etc/dovecot/conf.d/auth-local.conf.ext:91:
add auth_ prefix to all settings inside auth {} and remove the auth {} section
completely
> 
> doveconf shows that all my custom sockets are now part of a single 
> "service auth { }" section, while all the passdbs appear at the
top
> level.
> 
> How can I update my configuration for dovecot 2.x?
I didn't think there was any point in having multiple auth {} sections the
way they worked in v1.x, but looks like you've managed to find one way to
use them. I'm not sure if it's possible to convert them to v2.x
configuration currently. You could try this though:

service auth-10 {
  executable = auth -c /etc/dovecot-auth-10.conf
  unix_listener /var/spool/postfix/private/auth-10 {
    mode = 0666
  }
  process_limit = 1
}

So the master process would be starting multiple auth processes, each reading
their own (passdb) configuration from a different config file.