Installation issue (drush problem?) I was trying to install Aegir following the Automatic install guide, but I get an error. I've tried to install Aegir 2, then tried also Aegir 3, but the error is the same. Any clues?

Here's the message:


  The following settings will be used:
    Aegir frontend URL: site.dev.local
    Master server FQDN: site.dev.local
    Aegir root: /var/aegir
    Aegir user: aegir
    Web group: www-data
    Web server: apache
    Web server port: 80
    Aegir DB host: localhost
    Aegir DB user: root
    Aegir DB password: 
    Aegir DB port: 3306
    Aegir version: 7.x-3.x
    Aegir platform path: /var/aegir/hostmaster-7.x-3.x
    Admin email: aegir@site.dev.local
  
  Aegir install profile: hostmaster
  
  Do you really want to proceed with the install (y/n): y
  Enabling hosting-queued daemon
  
  The drush command '@hostmaster pm-enable hosting_queued' could not be found.  Run drush cache-clear drush to clear the commandfile cache if you have installed new extensions.                       [error]
  A Drupal installation directory could not be found                                                                                                                                                     [error]
  
  dpkg: error processing package aegir3-hostmaster (--configure):
   subprocess installed post-installation script returned error exit status 1
  dpkg: dependency problems prevent configuration of aegir3:
   aegir3 depends on aegir3-hostmaster (>= 3.0.1); however:
    Package aegir3-hostmaster is not configured yet.
  
  dpkg: error processing package aegir3 (--configure):
   dependency problems - leaving unconfigured
  No apport report written because the error message indicates its a followup error from a previous failure.
                                                                                                            Errors were encountered while processing:
   aegir3-hostmaster
   aegir3
  E: Sub-process /usr/bin/dpkg returned an error code (1)


Thanks!
The most common problem that could cause this is a broken mail setup.

Please the if you can sent an email from the server's cli to aegir@site.dev.local