authentification smtp postfix

J'ai suivi cet excellent howto : http://workaround.org/articles/ispmail-etch/ pour mettre en place mon serveur de mail.

Mais j'ai constaté un problème concernant l'authentification SMTP :

Lorsque j'envoie un mail de utilisateur@mondomaine.tld vers utilisateur@gmail.com par exemple, le serveur me demande de m'authentifier. NORMAL !

Mais lorsque j'envoie un mail de utilisateur@mondomaine.tld vers utilisateur@mondomaine.tld , le serveur n'exige aucune authentification !

Résultat, le serveur devient relay et usurpe nos comptes !

Ce que je souhaiterai bien sûr, c'est qu'il exige également une authentification pour les mails de mondomaine vers mondomaine.

Si quelqu'un à une idée ?

Merci

fais voir ta conf et les logs

ma configuration postfix

Voici ma configuration postfix :

Code:

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# See /usr/share/postfix/main.cf.dist for a commented, more complete
version
 
 
# Debian specific:  Specifying a file name will cause the first
# line of that file to be used as the name.  The Debian default
# is /etc/mailname.
#myorigin = /etc/mailname
 
smtpd_banner = $myhostname ESMTP $mail_name (Ubuntu)
biff = no
 
# appending .domain is the MUA's job.
append_dot_mydomain = no
 
# Uncomment the next line to generate "delayed mail" warnings
#delay_warning_time = 4h
 
readme_directory = no
 
# TLS parameters
smtpd_tls_cert_file = /etc/ssl/certs/postfix.pem
smtpd_tls_key_file = /etc/ssl/private/postfix.pem
smtpd_use_tls = yes
smtpd_tls_session_cache_database = btree:${data_directory}/smtpd_scache
smtp_tls_session_cache_database = btree:${data_directory}/smtp_scache
 
# See /usr/share/doc/postfix/TLS_README.gz in the postfix-doc package for
# information on enabling SSL in the smtp client.
 
myhostname = ks301752.kimsufi.com
alias_maps = hash:/etc/aliases
alias_database = hash:/etc/aliases
myorigin = /etc/mailname
mydestination =  localhost.kimsufi.com, , localhost
relayhost =
mynetworks =
 
mailbox_size_limit = 0
recipient_delimiter = +
inet_interfaces = all
virtual_mailbox_domains =
mysql:/etc/postfix/mysql-virtual-mailbox-domains.cf
virtual_uid_maps = static:5000
virtual_gid_maps = static:5000
virtual_mailbox_maps = mysql:/etc/postfix/mysql-virtual-mailbox-maps.cf
virtual_alias_maps =
mysql:/etc/postfix/mysql-virtual-alias-maps.cf,mysql:/etc/postfix/mysql-email2email.cf
virtual_transport = dovecot
dovecot_destination_recipient_limit = 1
smtpd_sasl_type = dovecot
smtpd_sasl_path = private/auth
smtpd_sasl_auth_enable = yes
#smtpd_recipient_restrictions= permit_sasl_authenticated
#smtpd_recipient_restrictions =
permit_sasl_authenticated,permit_mynetworks,reject_unauth_destination
 
smtpd_recipient_restrictions =
       permit_mynetworks,
       permit_sasl_authenticated,
       reject_unauth_destination
 
permit_sasl_authenticated,permit_mynetworks
smtpd_tls_auth_only = yes
 
 
content_filter = smtp-amavis:[127.0.0.1]:10024
receive_override_options = no_address_mappings