This is the mail system at host smtp3-g21.free.fr.

I'm sorry to have to inform you that your message could not
be delivered to one or more recipients. It's attached below.

For further assistance, please send mail to postmaster.

If you do so, please include this problem report. You can
delete your own text from the attached returned message.

                  The mail system

<Jas.Chiang@tymphany.com>: host smtpdg.tymphany.com[114.112.233.132] said: 550
   #5.7.1 Your access to submit messages to this e-mail system has been
   rejected. (in reply to RCPT TO command)

<Jimmy.Ro@tymphany.com>: host smtpdg.tymphany.com[121.12.130.37] said: 550
   #5.7.1 Your access to submit messages to this e-mail system has been
   rejected. (in reply to RCPT TO command)
Reporting-MTA: dns; smtp3-g21.free.fr
X-Postfix-Queue-ID: 4FFEF13F8B3
X-Postfix-Sender: rfc822; sboutruche@freebox.fr
Arrival-Date: Mon, 23 Apr 2018 12:06:56 +0200 (CEST)

Final-Recipient: rfc822; Jas.Chiang@tymphany.com
Original-Recipient: rfc822;Jas.Chiang@tymphany.com
Action: failed
Status: 5.0.0
Remote-MTA: dns; smtpdg.tymphany.com
Diagnostic-Code: smtp; 550 #5.7.1 Your access to submit messages to this e-mail
   system has been rejected.

Final-Recipient: rfc822; Jimmy.Ro@tymphany.com
Original-Recipient: rfc822;Jimmy.Ro@tymphany.com
Action: failed
Status: 5.0.0
Remote-MTA: dns; smtpdg.tymphany.com
Diagnostic-Code: smtp; 550 #5.7.1 Your access to submit messages to this e-mail
   system has been rejected.