troubleshooting Question

Can not email to Hotmail addresses

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JackFlag for United Kingdom of Great Britain and Northern Ireland asked on
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Hello,

I am having trouble emailing to Hotmail addresses, they fail with:

-------------------------------------------------------------------------------------------
Your message did not reach some or all of the intended recipients.

      Subject:      RE: change of address
      Sent:      29/10/2007 09:11

The following recipient(s) cannot be reached:

      'Email Address' on 29/10/2007 09:11
            There was a SMTP communication problem with the recipient's email server.  Please contact your system administrator.
            <infomedltd.co.uk #5.5.0 smtp;550 DY-002 Mail rejected by Windows Live Hotmail for policy reasons. The likely cause is a compromised or virus infected server/personal computer. 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>
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I try to go to: http://postmaster.live.com/ but it fails - server might be down.

Any help would be appreciated on why I can not email Hotmail contacts - its unfortunate as a lot of our customers use Hotmail.

Many thanks
Jack
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