550 Administrative prohibition - Why?


#1

Since today, we are receiving this type of errors. We don´t touched anything from the Control Panel.


Reporting-MTA: dns; homiemail-a49.g.dreamhost.com
X-Postfix-Queue-ID: B5EEC5E0059
X-Postfix-Sender: rfc822; xxx@xxx.xxx
Arrival-Date: Thu, 9 Aug 2012 07:01:42 -0700 (PDT)

Final-Recipient: rfc822; xxx@xxx.xxx
Original-Recipient: rfc822;xxx@xxx.xxx
Action: failed
Status: 5.0.0
Remote-MTA: dns; xxx.xxx
Diagnostic-Code: smtp; 550 Administrative prohibition

Final-Recipient: rfc822; xxx@xxx.xxx
Original-Recipient: rfc822;xxx@xxx.xxx
Action: failed
Status: 5.0.0
Remote-MTA: dns; xxx.xxx
Diagnostic-Code: smtp; 550 Administrative prohibition

Final-Recipient: rfc822; xxx@xxx.xxx
Original-Recipient: rfc822;xxx@xxx.xxx
Action: failed
Status: 5.0.0
Remote-MTA: dns; xxx.xxx
Diagnostic-Code: smtp; 550 Administrative prohibition