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The mail system

: host mx2.hotmail.com[65.55.37.72] said: 550 OU-001 Mail
rejected by Windows Live Hotmail for policy reasons. Reasons for rejection
may be related to content with spam-like characteristics or IP/domain
reputation problems. If you are not an email/network admin please contact
your E-mail/Internet Service Provider for help. Email/network admins,
please visit http://postmaster.live.com for email delivery information and
support (in reply to MAIL FROM command)


Reporting-MTA: dns; difraxfw.difrax.lokaal
X-Postfix-Queue-ID: A62211D700A0
X-Postfix-Sender: rfc822; ronaldvdc@difrax.com
Arrival-Date: Fri, 28 May 2010 09:33:13 +0200 (CEST)

Final-Recipient: rfc822; ronaldvdc@live.nl
Original-Recipient: rfc822;ronaldvdc@live.nl
Action: failed
Status: 5.0.0
Remote-MTA: dns; mx2.hotmail.com
Diagnostic-Code: smtp; 550 OU-001 Mail rejected by Windows Live Hotmail for
policy reasons. Reasons for rejection may be related to content with
spam-like characteristics or IP/domain reputation problems. If you are not
an email/network admin please contact your E-mail/Internet Service Provider
for help. Email/network admins, please visit http://postmaster.live.com for
email delivery information and support