merci pour votre réponse. j'ai essayé comme vous m'avez indiqué mais rien, car j'ai pas réception de mail.
# /etc/postfix/main.cf
smtpd_relay_restrictions = permit_mynetworks permit_sasl_authenticated defer_unauth_destination
myhostname = server
alias_maps = hash:/etc/aliases
alias_database = hash:/etc/aliases
myorigin = /etc/mailname
mydestination = $mydomain, localhost.$mydomain, localhost
relayhost = [mail.gandi.net]:587
mynetworks = 127.0.0.0/8 [::ffff:127.0.0.0]/104 [::1]/128 192.168.1.0/24
mailbox_size_limit = 0
recipient_delimiter = +
inet_interfaces = all
inet_protocols = all
smtp_use_tls = yes
smtp_sasl_auth_enable = yes
smtp_sasl_security_options = noanonymous
smtp_sasl_tls_security_options = $smtp_sasl_security_options
smtp_sasl_password_maps = hash:/etc/postfix/sasl_passwd
smtp_tls_CAfile = /etc/ssl/certs/ca-certificates.crt
#nano /etc/postfix/sasl_passwd
[mail.gandi.net]:587 xxxxx@mondomaine.xxx:mdp
Ceci est la configuration par défaut de gandi:
@ 10800 IN A 217.70.x.x
blog 10800 IN CNAME blogs.vip.gandi.net.
imap 10800 IN CNAME access.mail.gandi.net.
pop 10800 IN CNAME access.mail.gandi.net.
smtp 10800 IN CNAME relay.mail.gandi.net.
webmail 10800 IN CNAME webmail.gandi.net.
www 10800 IN CNAME webredir.vip.gandi.net.
@ 10800 IN MX 50 fb.mail.gandi.net.
@ 10800 IN MX 10 spool.mail.gandi.net.
Mon hôte est: server
FQDN: server.xxxxx.xxx
#sudo cat /var/log/mail.log
Jan 20 11:21:29 server postfix/master[3215]: terminating on signal 15
Jan 20 11:21:29 server postfix/master[3377]: daemon started -- version 2.11.0, configuration /etc/postfix
Jan 20 11:26:58 server postfix/cleanup[3405]: 677D460CA9: message-id=<20160120112658.677D460CA9@server>
Jan 20 11:26:58 server postfix/bounce[3404]: 7FBDA60CA6: sender non-delivery notification: 677D460CA9
Jan 20 11:26:58 server postfix/qmgr[3381]: 677D460CA9: from=<>, size=2236, nrcpt=1 (queue active)
Jan 20 11:26:58 server postfix/qmgr[3381]: 7FBDA60CA6: removed
Jan 20 11:31:57 server postfix/smtp[3392]: connect to mail.gandi.net[2001:4b98:c:521::11]:587: Network is unreachable
Jan 20 11:31:57 server postfix/smtp[3392]: 9C7B160CC1: to=<root@server.x.x.tech>, relay=none, delay=604, delays=0.05/0.02/604/0, dsn=4.4.1, status=deferred (connect to mail.gandi.net[2001:4b98:c:521::11]:587: Network is unreachable)
Jan 20 11:32:08 server postfix/smtp[3406]: SSL_connect error to mail.gandi.net[217.70.x.x]:587: Connection timed out
Jan 20 11:21:38 server postfix/pickup[3380]: 10ADE60B8A: uid=0 from=<root@server.xxx.tech>
Jan 20 11:21:38 server postfix/cleanup[3387]: 10ADE60B8A: message-id=<20160120112138.10ADE60B8A@server>
Jan 20 11:21:38 server postfix/qmgr[3381]: 10ADE60B8A: from=<root@server.xxx.tech>, size=351, nrcpt=1 (queue active)