Mail-enabled public folder accepts email messages from unauthorized users in an Exchange Server 2013 environment Content provided by Microsoft Applies to: Exchange Server 2013 EnterpriseExchange Server 2013 Standard Edition Select Product Version All Products Symptoms Consider the following scenario:You have a mail-enabled public folder in a Microsoft Exchange Server 2013 environment.You remove the Default and Anonymous permissions of the public folder.An unauthorized user sends an email message to the public folder.In this scenario, the public folder accepts the email message unexpectedly. Resolution To resolve this issue, install the following cumulative update: 2961810 Cumulative Update 6 for Exchange Server 2013 Status Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section. Last Updated: Aug 26, 2014 Can't find what you're looking for? Search No results Did this solve your problem? Yes No Tell us what we can do to improve the article Submit Thanks! Your feedback will help us improve the support experience.