Mail coming from monitoring tool not forwarded

[metan]

Hi all

I got a monitoring tool (myvm0, Cloudera Manager to monitor Hadoop clusters). In mail alert option I configured all settings linked to my POSTFIX server (myvm7)
At the beginning, when I tried to click on the button "send test mail alert", I had the following error message in POSTFIX log :

Oct  5 22:16:37 myvm7 postfix/smtpd[3774]: connect from myvm0[172.16.0.4]
Oct  5 22:16:37 myvm7 postfix/smtpd[3774]: NOQUEUE: reject: RCPT from myvm0[172.16.0.4]: 454 4.7.1 <myaccountmoo2@gmail.com>: Relay access denied; from=<noreply@localhost> to=<myaccountmoo2@gmail.com> proto=ESMTP helo=<myvm0>
Oct  5 22:16:37 myvm7 postfix/smtpd[3774]: disconnect from myvm0[172.16.0.4]

Of course, after adding my subnet in mynetworks option in Postfix main.cf (instead of 127.0.0.1), now when I click on the send test mail alert button, I got a better message :

Oct  5 22:34:03 myvm7 postfix/smtpd[4022]: connect from myvm0[172.16.0.4]
Oct  5 22:34:03 myvm7 postfix/smtpd[4022]: AF7C5B055A: client=myvm0[172.16.0.4]
Oct  5 22:34:03 myvm7 postfix/smtpd[4022]: disconnect from myvm0[172.16.0.4]

BUT, I still not receive anything in my inbox! I confirm I'm able to send mail directly from the POSTFIX server using TELNET.

Do you what is going on ? what I missed ? what I would need to modifiy ?

THANKS A LOT FOR YOUR HELPFUL FEEDBACK, really need you ! ! !

[metan]

hum...ok so it works when I try to send to a GMAIL address, but I receive nothing (even in spam) when I want to send in HOTMAIL accounts. Already met the case ?