Hello again,
I have been folowed tuto but I have always this message when relaying :
Nov 26 17:16:27 vm01 postfix/smtpd[15412]: NOQUEUE: reject: RCPT from xxx.com[82.x.x.x]: 554 5.7.1 <xxxx@xxx.fr>: Relay access denied; from=<xx@xxx.com> to=<xxx@xxx.fr> proto=ESMTP helo=<SRV2950-6.xxx.lan>
Result all messages that need to be relayed are blocked and not relayed

(other domains works)
With "mail" command relaying work but not when receiv mail from Internet.
Please help me...
Thanks in advance.
Zagg