I'm having trouble emailing firstname.lastname@example.org (but have no problems sending to anyone else):
Your message did not reach some or all of the intended recipients.
Subject: Adding namespaces to a project & content files
Sent: 16/10/2009 10:37
The following recipient(s) could not be reached:
email@example.com on 16/10/2009 10:38
You do not have permission to send to this recipient. For assistance, contact your system administrator.
<mail.innovasys.com #5.7.1 smtp;550 5.7.1 Message rejected as spam by Content Filtering.>