[Postfix-es] Fwd: El sistema no envia correo a otros dominios

[Jose]

Soy nuevo en esta lista y pido perdon ya que olvide poner la parte del log
 que creo identifica el problema , aqui va:

Dec 21 10:32:47 ies25abril postfix/qmgr[23465]: CF516FF52:
from=<jmragap en ono.com>, size=833, nrcpt=1 (queue active)
Dec 21 10:32:47 ies25abril postfix/qmgr[23465]: 19D84FF29:
from=<root en ies25abril.dsland.org>, size=880, nrcpt=1 (queue active)
Dec 21 10:32:47 ies25abril postfix/qmgr[23465]: 27902FF58:
from=<jmragap en ono.com>, size=2942, nrcpt=1 (queue active)
Dec 21 10:32:49 ies25abril postfix/smtp[24999]: CF516FF52:
to=<jmragap en ono.com>, relay=none, delay=30149, status=deferred (Host or
domain name not found. Name service error for name=ono.com type=MX: Host not
found, try again)
Dec 21 10:33:03 ies25abril postfix/smtp[25000]: 19D84FF29:
to=<josemaria en jmraga.dyndns.org>, relay=none, delay=3904, status=deferred
(Host or domain name not found. Name service error for name=jmraga.dyndns.org
type=MX: Host not found, tryagain)
Dec Dec 21 10:33:09 ies25abril postfix/smtp[25001]: 27902FF58:
to=<fran_mira en msn.com>, relay=none, delay=816, status=deferred (Host or
domain name not found. Name service error for name=msn.com type=MX: Host not
found, try again)

Tengo instalado Postfix en una Debian Sarge y el problema es que no consigo
que el sisteme envie
correo a dominios externos (p.e hotmail.com, ono.com, etc)por otro lado no
hay problema con el correo interno y con el correo dirigido a mydominio.

El servidor es unico en la red local debe dar salida al correo de todos los
clientes de la red (192.168.0.0/24)

Tambien tengo instalado courier-imap, amavis-new y clamav
Aqui tienen la salida de postconf -n por si me pueden ayudar.

poniente:~# postconf -n
alias_database = hash:/etc/aliases
alias_maps = hash:/etc/aliases, hash:/var/lib/mailman/data/aliases
command_directory = /usr/sbin
config_directory = /etc/postfix
content_filter = smtp-amavis:[127.0.0.1]:10024
daemon_directory = /usr/lib/postfix
default_destination_concurrency_limit = 10
disable_dns_lookups = no
disable_vrfy_command = yes
home_mailbox = Maildir/
inet_interfaces = all
local_destination_concurrency_limit = 2
local_recipient_maps = $alias_maps unix:passwd.byname
mail_name = Postfix/MJ-1.08
mail_owner = postfix
mailbox_command = procmail -a "$EXTENSION"
mailbox_size_limit = 0
maximal_queue_lifetime = 5d
message_size_limit = 10485760
mydestination = $myhostname localhost.$mydomain $mydomain
mydomain = ies25abril.dsland.org
myhostname = poniente.ies25abril.dsland.org
mynetworks = 127.0.0.1 192.168.0.0/24
myorigin = /etc/mailname
owner_request_special = no
queue_directory = /var/spool/postfix
recipient_delimiter = +
relay_domains = $mydomain
relayhost =
setgid_group = postdrop
smtpd_banner = $myhostname ESMTP $mail_name ($mail_version)
smtpd_data_restrictions = reject_unauth_pipelining
smtpd_recipient_restrictions = permit_mynetworks reject_unauth_destination
transport_maps = hash:/etc/postfix/transport
--
Jose Maria Raga
Benetússer (Valencia)
josemaria en ies25abril.dsland.org

-------------------------------------------------------

-- 
Jose Maria Raga
Benetússer (Valencia)
jmragap en ono.com