Je ne parviens pas à envoyer des mails à mes amis au Canada

Bonjour,
Depuis peu il m' est impossible d' envoyer des mails à mon ami du Canada. Tout le monde les reçoit sauf lui.
Le mail me revient avec le message suivant : Mail Delivery System
Date : 19/05/2016 18:25:05
A : [email protected]
Sujet : Undelivered Mail Returned to Sender


This is the mail system at host smtpout02.voo.be.

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

: host mxmta.owm.bell.net[184.150.200.82] said: 550 you
are not allowed to send mail to (in reply to RCPT
TO command)


____________________________________________________________

Return-Path:
Received: from fml_ans.voo.be (unknown [185.3.161.1])
by smtpout02.voo.be (Postfix) with ESMTP id 6E620C0CB9
for ; Thu, 19 May 2016 18:25:02 +0200 (CEST)
Received: from smtpout02.voo.be (smtpout02.voo.be [185.3.161.8])
by fml_ans.voo.be with ESMTP id u4JGP2RG016326-u4JGP2RH016326
for ; Thu, 19 May 2016 18:25:02 +0200
Received: from localhost (localhost [127.0.0.1])
by smtpout02.voo.be (Postfix) with ESMTP id 344CBC0F08
for ; Thu, 19 May 2016 18:25:02 +0200 (CEST)
X-Virus-Scanned: amavisd-new at example.com
X-Amavis-Alert: BAD HEADER SECTION, Non-encoded 8-bit data (char 92 hex):
Date: ...6 18:24:58 +0200 (Paris, Madrid (heure d\222\351t\351))
Received: from smtpout02.voo.be ([127.0.0.1])
by localhost (SMTPOUT02.VOO.EU [127.0.0.1]) (amavisd-new, port 10024)
with LMTP id Hdd98IaDt9-A for ;
Thu, 19 May 2016 18:24:53 +0200 (CEST)
Received: from Christian-PC (host-85-201-64-229.dynamic.voo.be [85.201.64.229])
by smtpout02.voo.be (Postfix) with ESMTP id 8D695C0CB9
for ; Thu, 19 May 2016 18:24:53 +0200 (CEST)
MIME-Version: 1.0
Message-Id:
Date: Thu, 19 May 2016 18:24:58 +0200 (Paris, Madrid (heure d’été))
Content-Type: Multipart/related;
charset="iso-8859-1";
type="multipart/alternative";
boundary="------------Boundary-00=_LXMFYPP66RO000000000"
X-Mailer: IncrediMail (6605288)
From: "xxxxxxxxxxxxxl"
X-FID: FLAVOR00-NONE-0000-0000-000000000000
X-Priority: 3
To: "Lise Tardiff"
Subject: test