Почтовый сервер в домен

virtual_alias_maps = hash:/etc/postfix/virtual
alias_maps = hash:/etc/postfix/aliases
alias_database = hash:/etc/postfix/aliases
mailbox_command = /usr/lib/dovecot/deliver
smtpd_banner = sviyaga-404
smtpd_sasl_auth_enable = yes
smtpd_sasl_type = dovecot
smtpd_sasl_path = private/auth

passdb {
  args = dovecot
  driver = pam
}
protocols = imap pop3
service auth {
  unix_listener /var/spool/postfix/private/auth {
    group = postfix
    mode = 0660
    user = postfix
  }
}
ssl = no
userdb {
  driver = passwd
}