Log :

Jan 19 16:47:01 ns20275 postfix/smtp[27523]: 632FF39B84: to=<root@icem.org>, orig_to=<root>, relay=none, delay=0, status=bounced (mail for icem.org loops back to myself)

 postconf -n

append_dot_mydomain = no
biff = no
config_directory = /etc/postfix
inet_interfaces = all
mailbox_command = procmail -a "$EXTENSION"
mailbox_size_limit = 0
mydestination = ns20275.ovh.net, localhost.ovh.net, , localhost
myhostname = ns20275.ovh.net
mynetworks = 127.0.0.0/8
myorigin = /etc/mailname
recipient_delimiter = +
relay_domains = $mydestination, icem.org
smtpd_banner = $myhostname ESMTP $mail_name (Debian/GNU)


dig icem.org MX

; <<>> DiG 9.2.4 <<>> icem.org MX
;; global options:  printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 29956
;; flags: qr aa rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 3, ADDITIONAL: 4

;; QUESTION SECTION:
;icem.org.                      IN      MX

;; ANSWER SECTION:
icem.org.               21600   IN      MX      10 mail.icem.org.