Begin forwarded message:

From: MAILER-DAEMON@univ-paris13.fr (Mail Delivery System)

Subject: Undelivered Mail Returned to Sender

Date: 26 April 2017 at 13:23:08 GMT+2

To: grrstf@gmail.com

This is the mail system at host upn.univ-paris13.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

<stefano.guerrini@lipn.univ-paris13.fr>: host
   mail.lipn.univ-paris13.fr[194.254.163.74] said: 554 5.7.1 Service
   unavailable; Client host [194.254.164.7] blocked using bl.spamcop.net;
   Blocked - see http://www.spamcop.net/bl.shtml?194.254.164.7 (in reply to
   RCPT TO command)
Reporting-MTA: dns; upn.univ-paris13.fr
X-Mail-Server-Queue-ID: 3C35527C1CE
X-Mail-Server-Sender: rfc822; grrstf@gmail.com
Arrival-Date: Wed, 26 Apr 2017 13:22:58 +0200 (CEST)

Final-Recipient: rfc822; stefano.guerrini@lipn.univ-paris13.fr
Original-Recipient: rfc822;stefano.guerrini@lipn.univ-paris13.fr
Action: failed
Status: 5.7.1
Remote-MTA: dns; mail.lipn.univ-paris13.fr
Diagnostic-Code: smtp; 554 5.7.1 Service unavailable; Client host
   [194.254.164.7] blocked using bl.spamcop.net; Blocked - see
   http://www.spamcop.net/bl.shtml?194.254.164.7

From: Stefano Guerrini <grrstf@gmail.com>

Subject: test

Date: 26 April 2017 at 13:22:56 GMT+2

To: Stefano Guerrini <stefano.guerrini@univ-paris13.fr>

=====================================

Stefano Guerrini