envoie en nombre et postfix

bonjour à toutes et a tous

J'ai sur mon serveur linux Postfix et je voudrais le configurer pour un
l'envoie de courrier avec le logiciel de sarbacane (envoie en nombre)

Mais j'ai des probleme de configuration

voici le main.cf
# These are only the parameters changed from a default install
# see /etc/postfix/main.cf.dist for a commented, fuller version of this
file.


# Variable
myhostname = sodhin.com
#mydomain = sodhin.com


# These are changed by postfix install script
readme_directory = /usr/share/doc/postfix-2.1.1/README_FILES
sample_directory = /usr/share/doc/postfix-2.1.1/samples
sendmail_path = /usr/sbin/sendmail.postfix
setgid_group = postdrop
command_directory = /usr/sbin
manpage_directory = /usr/share/man
daemon_directory = /usr/lib/postfix
newaliases_path = /usr/bin/newaliases.postfix
mailq_path = /usr/bin/mailq.postfix

# User configurable parameters

inet_interfaces = all
mynetworks_style = host
delay_warning_time = 4h
unknown_local_recipient_reject_code = 450
smtp-filter_destination_concurrency_limit = 2
lmtp-filter_destination_concurrency_limit = 2
smtpd_sasl_path = /etc/postfix/sasl:/usr/lib/sasl2
recipient_delimiter = +
owner_request_special = no
alias_maps = hash:/etc/postfix/aliases, hash:/var/lib/mailman/data/aliases
html_directory = /usr/share/doc/postfix-2.1.1/html

sender_canonical_maps = hash:/etc/postfix/sender_canonical

mydestination = $myhostname, localhost.$mydomain, $mydomain

myorigine = $mydomain
# relay_domain = sodhin.com
# relayhost = [mail.noos.fr]

mailbox_command = procmail -a "$EXTENSION" #### --> voilà la ligne à
ajouter.

et voici mon message d'erreur
Erreur pendant l'expedition: Operation timed out

merci de votre aide

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