I get this when sending mail to the list. Any ideas?
Reporting-MTA: dns; smtprelay02.b.hostedemail.com X-Postfix-Queue-ID: 1464C15EE4D X-Postfix-Sender: rfc822; geoff@hughes.net Arrival-Date: Sun, 29 Apr 2012 04:18:25 +0000 (UTC)
Final-Recipient: rfc822; fedora-list@redhat.com Original-Recipient: rfc822;fedora-list@redhat.com Action: failed Status: 5.2.1 Remote-MTA: dns; mx1.redhat.com Diagnostic-Code: smtp; 550 5.2.1 fedora-list@redhat.com... Mailbox disabled for this recipient