Problème de configuration d'un serveur et client sous-debian

bonjour,
J'ai configuré un serveur postfix sous-debian:
Pour commencer, j'ai fait un telconfiguration avec le bind:
-configuration de named.conf.local:
//
// Do any local configuration here
//

// Consider adding the 1918 zones here, if they are not used in your
// organization
//include "/etc/bind/zones.rfc1918";


zone "tolotra-project.com" {

type master;

file "/etc/bind/db.tolotra-project.com";
};


zone "2.168.192.in-addr.arpa" {

type master;

notify no;

file "/etc/bind/db.192";

};
-puis j'ai crée le fichier "db.tolotra-project.com":
; BIND data file for local loopback interface
;


$TTL 604800

@ IN SOA ns.tolotra-project.com. tolotra.tolotra-project.com. (

1 ; Serial
604800 ; Refresh
86400 ; Retry
2419200 ; Expire
604800 ) ; Negative Cache TTL
;

@ IN NS ns.tolotra-project.com.

@ IN A 192.168.2.2
ns IN A 192.168.2.2
tolotra-project.com. IN MX 10 mail.tolotra-project.com.
tolotra-project.com. IN A 192.168.2.2
mail IN A 192.168.2.2
www IN A 192.168.2.2
mail IN A 192.168.2.2
smtp IN A 192.168.2.2
pop IN A 192.168.2.2
pop3 IN A 192.168.2.2
imap IN A 192.168.2.2
-et le fichier "db.192":
;
; BIND reverse data file for local loopback interface

;
$TTL 604800
@ IN SOA ns.tolotra-project.com. mail.tolotra-project.com. (

2 ; Serial
604800 ; Refresh
86400 ; Retry
2419200 ; Expire
604800 ) ; Negative Cache TTL;
@ IN NS ns.
2
IN PTR ns.tolotra-project.com.
Ensuite j'ai installé postifix:
//apt-get install postfix
Puis j'ai édité et configuré le fichier: /etc/postfix/main.cf de la sorte:
# 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/smtpd.crt

smtpd_tls_key_file = /etc/ssl/private/smtpd.key
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 = mail.tolotra-project.com

alias_maps = hashetc/aliases

alias_database = hashetc/aliases

mydestination = mail.tolotra-project.com, domicile-ubuntu, ubuntu, localhost.localdomain, localhost
relayhost =
mynetworks = 127.0.0.0/8 [:ffff:127.0.0.0]/104 /128 192.168.2.0/24
mailbox_command =
mailbox_size_limit = 0
recipient_delimiter = +
inet_interfaces = all
default_transport = smtp

relay_transport = smtp

myorigin = /etc/mailname

inet_protocols = all
home_mailbox = Maildir/
smtpd_sasl_type = dovecot
smtpd_sasl_path = private/auth-client

smtpd_sasl_local_domain =

smtpd_sasl_security_options = noanonymous
broken_sasl_auth_clients = yes

smtpd_sasl_auth_enable = yes
smtpd_recipient_restrictions = permit_sasl_authenticated,permit_mynetworks,reject_unauth_destination

smtpd_tls_aut_only = no
smtp_use_tls = yes
smtp_tls_note_starttls_offer = yes

smtpd_tls_CAfile = /etc/ssl/certs/cacert.pem
smtpd_tls_loglevel = 1

smtpd_tls_received_header = yes
s
mtpd_tls_session_cache_timeout = 3600s

tls_random_source = devdev/urandom

Puis j'ai installé dovecot et j'ai édité le fichier /etc/dovecot/dovecot.conf et j'ai changer les paramètres suivantes:
socket listen {
//
//
client {
//
//
path=/var/spool/private/auth-client
mode=0660
user=postfix
group=postfix
}
}
Puis j'ai tester avec la commande suivante:
#telnet mail.tolotra-project.com 25
Et voici le résultat:
trying to connect to mail.tolotra-project.com
connected to mail.tolotra-project.com
.........................
.........................
connection closed by foreign host
Or normalement ça devrait marché.

Merci de votre collaboration. S"il vous plaît aide moi car il s'agit de ma mémoire de fin d'étude et je doit finir le plus vite possible!