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====

I need help to migrate my old mail server into iRedmail server with ldap authentication. My current mail server not supported to virtual domain/users. I need disable single management user vmail in dovecot so that it will fit in my requirement. I am attaching current dovecot conf file.   

auth_mechanisms = plain login
info_log_path = /var/log/dovecot.info
listen = 0.0.0.0
log_path = /var/log/dovecot.error
log_timestamp = "%Y-%m-%d %H:%M:%S "
login_greeting = Dovecot Sever ready.
mail_location = maildir:~/Maildir
mail_privileged_group = mail
passdb {
  args = /etc/dovecot/dovecot-ldap.conf
  driver = ldap
}
protocols = imap pop3
service auth {
  unix_listener /var/spool/postfix/private/auth {
    group = postfix
    mode = 0660
    user = postfix
  }
  unix_listener auth-master {
    mode = 0600
  }
  user = root
}
service pop3-login {
  inet_listener pop3 {
    port = 0
  }
}
ssl_cert = </etc/ssl/self-signed/server.crt
ssl_key = </etc/ssl/self-signed/server.pem
userdb {
  driver = passwd
}
userdb {
  args = /etc/dovecot/dovecot-ldap.conf
  driver = ldap
}
protocol imap {
  imap_client_workarounds =
}
protocol pop3 {
  pop3_uidl_format = %08Xu%08Xv
}