Incoming Emails Bouncing Back



When one of my contacts sends me an email, they now get it reported as undelivered with these details:

[code]Reporting-MTA: dns;
Received-From-MTA: dns;DUB104-W41
Arrival-Date: Tue, 18 Sep 2012 02:56:37 -0700

Final-Recipient: rfc822;
Action: failed
Status: 5.7.1
Diagnostic-Code: smtp;554 5.7.1 Recipient address rejected: Access denied[/code]

[“” replacing my email address]

I am hosting my domain and email on Dreamhost. My email has been working fine for months and I haven’t touched any of the settings for months either.

This bouncing back started 4 days ago. But I am getting emails from other people ok, and my contact with this problem is able to send to others too - the problem only seems to happen when they send to me.

Any thoughts or ideas on this, I’d be very grateful. Thank you!