Public Store storage quota must be limited.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-33573	Exch-1-106	SV-43993r1_rule	ECSC-1	Low

Description
This setting controls the maximum sizes of a Public Folder and the system’s response if these limits are exceeded. There are two available controls and the system response when the quota has been exceeded. The first control sends an email warning to Folder Owners roles alerting them that the folder has exceeded its quota. The second level prevents posting any additional items to the folder. As a practical matter, level 1 serves the purpose of prompting owners to manage their folders. Level 2 impedes users in their ability to work, and is not required where folder use interruption is not acceptable. Public Folder Storage Quota Limitations are not a substitute for overall disk space monitoring.

Description

This setting controls the maximum sizes of a Public Folder and the system’s response if these limits are exceeded. There are two available controls and the system response when the quota has been exceeded. The first control sends an email warning to Folder Owners roles alerting them that the folder has exceeded its quota. The second level prevents posting any additional items to the folder. As a practical matter, level 1 serves the purpose of prompting owners to manage their folders. Level 2 impedes users in their ability to work, and is not required where folder use interruption is not acceptable. Public Folder Storage Quota Limitations are not a substitute for overall disk space monitoring.

STIG	Date
Exchange 2010 Mailbox Server STIG	2017-07-05

Details

Check Text ( C-41679r1_chk )
If public folders are not used this check is NA. Obtain the Email Domain Security Plan (EDSP) and locate the value for 'ProhibitPostQuota'. Open the Exchange Management Shell and enter the following command: Get-PublicFolderDatabase \| Select Name, Identity, ProhibitPostQuota If the value of 'ProhibitPostQuota' is not set to the sites 'ProhibitPostQuota', this is a finding.

Fix Text (F-37464r1_fix)
Open the Exchange Management Shell and enter the following command: Set-PublicFolderDatabase <'publicdatabasename'> -ProhibitPostQuota <'SitesProhibitPostQuotaLimit'>