[Dovecot] Dovecot pam

[Tommy Berglund]

Hello!
How can I disable passdb { driver = pam }
in /etc/dovecot/conf.d/auth-system.conf.ext
from file /etc/dovecot/local.conf.

I have postfix and dovecot set up to only use virtual users.
I'd rather do all the configuration in local.conf if possible.

My doveconf-n

# 2.2.9: /etc/dovecot/dovecot.conf
# OS: Linux 3.13.0-24-generic x86_64 Ubuntu 14.04 LTS
auth_failure_delay = 5 secs
auth_mechanisms = plain login cram-md5
listen = *
log_timestamp = "%Y-%m-%d %H:%M:%S "
mail_home = /var/vmail/%d/%n
mail_location = mdbox:~/
managesieve_notify_capability = mailto
managesieve_sieve_capability = fileinto reject envelope 
encoded-character vacation subaddress comparator-i;ascii-numeric 
relational regex imap4flags copy include variables body enotify 
environment mailbox date ihave
namespace inbox {
   inbox = yes
   location =
   mailbox Drafts {
     auto = subscribe
     special_use = \Drafts
   }
   mailbox Junk {
     auto = subscribe
     special_use = \Junk
   }
   mailbox Sent {
     auto = subscribe
     special_use = \Sent
   }
   mailbox "Sent Messages" {
     special_use = \Sent
   }
   mailbox Trash {
     auto = subscribe
     special_use = \Trash
   }
   prefix =
}
passdb {
   args = scheme=cram-md5 /etc/dovecot/passwd
   driver = passwd-file
}
plugin {
   sieve = /vmail/%d/%n/.dovecot.sieve
   sieve_dir = /vmail/%d/%n/sieve
   sieve_global_path = /vmail/dovecot/sieve/default.sieve
}
protocols = imap lmtp sieve
service auth {
   executable = /usr/lib/dovecot/auth
   unix_listener /var/spool/postfix/private/auth-client {
     group = postfix
     mode = 0660
     user = postfix
   }
   user = root
}
service imap-login {
   inet_listener imaps {
     port = 993
     ssl = yes
   }
}
service lmtp {
   unix_listener /var/spool/postfix/private/dovecot-lmtp {
     group = postfix
     mode = 0600
     user = postfix
   }
   user = vmail
}
ssl_cert = </etc/dovecot/dovecot.pem
ssl_key = </etc/dovecot/private/dovecot.pem
userdb {
   driver = passwd
}
userdb {
   args = /etc/dovecot/users
   driver = passwd-file
}
protocol lmtp {
   mail_plugins = sieve
   postmaster_address = postmaster at localhost
}

Best regards