This is the mail system at host mx.almoinha.pt.

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

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                   The mail system

<andreleite83@msn.com>: host mx2.hotmail.com[65.55.37.72] said: 550 DY-001
    (COL004-MC1F11) Unfortunately, messages from 217.129.243.171 weren't sent.
    Please contact your Internet service provider. You can tell them that
    Hotmail does not relay dynamically-assigned IP ranges. You can also refer
    your provider to http://mail.live.com/mail/troubleshooting.aspx#errors. (in
    reply to MAIL FROM command)

Reporting-MTA: dns; mx.almoinha.pt
X-Postfix-Queue-ID: 472DD21FD8
X-Postfix-Sender: rfc822; postmaster@almoinha.pt
Arrival-Date: Tue, 29 Dec 2015 18:33:40 +0000 (WET)

Final-Recipient: rfc822; andreleite83@msn.com
Original-Recipient: rfc822;andreleite83@msn.com
Action: failed
Status: 5.0.0
Remote-MTA: dns; mx2.hotmail.com
Diagnostic-Code: smtp; 550 DY-001 (COL004-MC1F11) Unfortunately, messages from
    217.129.243.171 weren't sent. Please contact your Internet service
    provider. You can tell them that Hotmail does not relay
    dynamically-assigned IP ranges. You can also refer your provider to
    http://mail.live.com/mail/troubleshooting.aspx#errors.