Google reported on 12/18/14 that “Currently some messages are being incorrectly marked as spam in the Gmail service. As a potential workaround to this issue please check your spam label for messages that may have been incorrectly categorized as spam.” (see Google Apps Status Dashboard post from 12/18/14.) This may also have resulted in your seeing messages in your Inbox that said “this was not directed to your Spam folder due to your organization’s request”.
Per Google, this issue was resolved in the afternoon on 12/18/14.
If you have any questions, please contact the ITS Help Desk at helpdesk@denison.edu or 740-587-6395.