troubleshooting Question

SBS 2003 clients cannot send email to us getting open relay error

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Geneyes008Flag for Canada asked on
9 Comments1 Solution451 ViewsLast Modified:
We have a sbs 2003 box and are hosting exchange.  For the past week when some of our clients email us they get a bounce back that says:
Your message could not be delivered.

The recipient's computer rejected your e-mail.
Please verify the recipient's e-mail address and resend.

    Recipient: <email address>
    Reason:    5.7.1 ip address has been blocked by Open Relay Test

When i open the attached doc it says:
Reporting-MTA: dns;
Arrival-Date: Sun, 10 Jul 2011 21:32:52 -0600
Received-From-MTA: dns; edmwcm03 (ip address)

Final-Recipient: RFC822; <email>
Action: failed
Status: 5.1.1
Remote-MTA: dns; (
Diagnostic-Code: smtp; 550 5.7.1 ip address has been blocked by Open Relay Test

is this an issue with our server or the senders?


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