Mail quota settings must not restrict receiving mail.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
EXCH-MB-400	EXCH-MB-400	EXCH-MB-400_rule		Low

Description
Mail quota settings control the maximum sizes of a user's mailbox and the system's response if these limits are exceeded. Mailbox data that is not monitored against a quota increases the risk of mail loss due to filled disk space, which can also render the system unavailable. There are three controls, which supply graduated levels of opportunity to respond before risking data loss. This control impedes users in their ability to work, and is not recommended, as mail interruption is not acceptable.

Description

Mail quota settings control the maximum sizes of a user's mailbox and the system's response if these limits are exceeded. Mailbox data that is not monitored against a quota increases the risk of mail loss due to filled disk space, which can also render the system unavailable. There are three controls, which supply graduated levels of opportunity to respond before risking data loss. This control impedes users in their ability to work, and is not recommended, as mail interruption is not acceptable.

STIG	Date
Microsoft Exchange 2010 Mailbox Server Role	2012-05-31

Details

Check Text ( C-_chk )
Open the Exchange Management Shell and enter the following command. Get-MailboxDatabase \| Select Name, Identity, ProhibitSendReceiveQuota If the value of "ProhibitSendReceiveQuota" is not set to "Unlimited", this is a finding.

Fix Text (F-_fix)
Open the Exchange Management Shell and enter the following command. Set-MailboxDatabase <'MailboxDatabaseName'> -ProhibitSendReceiveQuota "Unlimited"