I seem to have a problem with my server e-mail settings. Whenever I send an e-mail out via PHP mail() function, it bounces back with this message:

This message has been rejected because it has
an overlength date field which can be used
to subvert Microsoft mail programs
The following URL has further information
http://www.securityfocus.com/frames/...html%3Fid%3D61
and this is the headers which were sent:

To: send_to@email.net
Subject: New Message is has been posted!
From: "Webmaster Forum"
Auto-Submitted: auto-generated
Message-ID:
MIME-Version: 1.0
Content-Type: text/plain; charset="ISO-8859-1"
Content-Transfer-Encoding: 8bit
X-Priority: 3
X-Mailer: PHP Mail
Date: Sat, 04 Nov 2006 13:27:29 +0000
server.domain.com
sendtodomain.com
[99 99] / [47 12]
website-domaim.com
X-Source:
X-Source-Args:
X-Source-Dir:
Does anyone know what can be causing the e-mails to bounce?