Certain users are reporting problem sending emails to certain accounts/domains. These users get a NDR message as follow:
The following recipient(s) cannot be reached:
email@externalDomain.com on 10/30/2013 4:11 PM
You do not have permission to send to this recipient. For assistance, contact your system administrator.
<OUR_SERVER_NAME.OUR_DOMAIN.COM #5.7.1 smtp;550 5.7.1 Message rejected due to content restrictions>
Our mail solution is Exchange 2003 SP2, Don't have any Block List service configure or Global Deny list configuration.
Our SCL rating has been default greater than or equal to 8 since forever.
Our AntiSpam Solution is McAfee Email Gateway 7.5 but for outbound emails there is only one rule defined.
That rule add a disclaimer to the emails in plain text and there's a link for our website as www.domain.net
We don't have forefront or another edge solution
I don't really know what could be happening here.
Any help apreciate