kali - Linux postfix/dovecot 554 Acceso de retransmisión denegado

servidor de correo kali linux

Question

Tengo este error 554 Relay access denied al intentar enviar un correo electrónico desde mi cliente de Outlook.

Puedo leer correos entrantes pero no puedo enviarlos.

Si me conecto con telnet localhost 25 puedo enviar correos electrónicos externos, pero con el cliente de outlook no funciona.

Aquí está mi configuración de postfix y dovecot:

postconf -n

alias_database = hash:/etc/aliases
alias_maps = hash:/etc/aliases
append_dot_mydomain = no
biff = no
config_directory = /etc/postfix
inet_interfaces = all
mailbox_size_limit = 0
mydestination = localhost
myhostname = mail.mydomain.com
mynetworks = 127.0.0.0/8 [::ffff:127.0.0.0]/104 [::1]/128
myorigin = /etc/mailname
readme_directory = no
recipient_delimiter = +
relayhost =
smtpd_banner = $myhostname ESMTP $mail_name (Ubuntu)
smtpd_recipient_restrictions = permit_sasl_authenticated, permit_mynetworks, reject_unauth_destination
smtpd_sasl_auth_enable = yes
smtpd_sasl_path = private/auth
smtpd_sasl_type = dovecot
smtpd_tls_auth_only = yes
smtpd_tls_cert_file = /etc/ssl/certs/dovecot.pem
smtpd_tls_key_file = /etc/ssl/private/dovecot.pem
smtpd_use_tls = yes
virtual_alias_maps = mysql:/etc/postfix/mysql-virtual-alias-maps.cf
virtual_mailbox_domains = mysql:/etc/postfix/mysql-virtual-mailbox-domains.cf
virtual_mailbox_maps = mysql:/etc/postfix/mysql-virtual-mailbox-maps.cf
virtual_transport = lmtp:unix:private/dovecot-lmtp

doveconf -n

# 2.1.7: /etc/dovecot/dovecot.conf
# OS: Linux 3.9.3-x86_64-linode33 x86_64 Ubuntu 13.04 ext3
auth_mechanisms = plain login
mail_location = maildir:/var/mail/vhosts/%d/%n
mail_privileged_group = mail
namespace inbox {
  inbox = yes
  location = 
  mailbox Drafts {
    special_use = /Drafts
  }
  mailbox Junk {
    special_use = /Junk
  }
  mailbox Sent {
    special_use = /Sent
  }
  mailbox "Sent Messages" {
    special_use = /Sent
  }
  mailbox Trash {
    special_use = /Trash
  }
  prefix = 
}
passdb {
  args = /etc/dovecot/dovecot-sql.conf.ext
  driver = sql
}
passdb {
  args = /etc/dovecot/dovecot-sql.conf.ext
  driver = sql
}
protocols = imap pop3 lmtp
service auth-worker {
  user = vmail
}
service auth {
  unix_listener /var/spool/postfix/private/auth {
    group = postfix
    mode = 0666
    user = postfix
  }
  unix_listener auth-userdb {
    mode = 0600
    user = vmail
  }
  user = dovecot
}
service imap-login {
  inet_listener imap {
    port = 0
  }
}
service lmtp {
  unix_listener /var/spool/postfix/private/dovecot-lmtp {
    group = postfix
    mode = 0600
    user = postfix
  }
}
service pop3-login {
  inet_listener pop3 {
    port = 0
  }
}
ssl = required
ssl_cert = </etc/dovecot/dovecot.pem
ssl_key = </etc/dovecot/private/dovecot.pem
userdb {
  args = uid=vmail gid=vmail home=/var/mail/vhosts/%d/%n
  driver = static
}
userdb {
  args = uid=vmail gid=vmail home=/var/mail/vhosts/%d/%n
  driver = static
}

¿Alguna idea?

Answer 1

Si usa una versión postfix más nueva que 2.10, entonces necesita agregar la opción smtpd_relay_restrictions como se describe aquí :

# With Postfix 2.10 and later, the mail relay policy is # preferably specified under smtpd_relay_restrictions. /etc/postfix/main.cf: smtpd_relay_restrictions = permit_mynetworks permit_sasl_authenticated reject_unauth_destination # Older configurations combine relay control and spam control under # smtpd_recipient_restrictions. To use this example with Postfix ≥ # 2.10 specify "smtpd_relay_restrictions=". /etc/postfix/main.cf: smtpd_recipient_restrictions = permit_mynetworks permit_sasl_authenticated reject_unauth_destination ...other rules...

Después de eso, cualquier usuario autenticado con sasl debe poder enviar correos a través del servidor usando smtp.

Answer 2

Para mi postfix 2.6.6 en Amazon AWS EC2, resultó que tenía una configuración incorrecta de las configuraciones "mydestination" y "relay_domains" en main.cf. Los valores correctos (los que me funcionaron) fueron:

mydestination = $myhostname, $mydomain, localhost relay_domains = $mydestination