Receveid this - after sending email to a KNOWN contact:
This Message was undeliverable due to the following reason:
Each of the following recipients was rejected by a remote mail server.
The reasons given by the server are included to help you determine why each recipient was rejected.
Recipient: <mminns@sjc.qld.edu.au>
Reason: 61.9.189.137 blacklisted at dnsbl.sorbs.net
Please reply to <Postmaster@mx.bigpond.com> if you feel this message to be in error.
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Is this a real msg, or scam attempt. How do i prevent?