Detections
Analytics

EX13-MB-000160 - Exchange Mail Quota settings must not restrict receiving mail.

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This audit has been deprecated and will be removed in a future update.

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Information

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 multiple controls, which supply graduated levels of opportunity to respond before risking email service loss.

This control prohibits the user from sending an email when the mailbox limit reaches the prohibit send quota value.

Note: Best practice for this setting is to prohibit the user from sending email when the mailbox reaches 90 percent of capacity.

NOTE: Nessus has provided the target output to assist in reviewing the benchmark to ensure target compliance.

Solution

Update the EDSP.

Open the Exchange Management Shell and enter the following command:

Set-MailboxDatabase -Identity <'IdentityName'> -ProhibitSendQuota <'QuotaLimit'>

Note: The <IdentityName> and <QuotaLimit> values must be in quotes.

See Also

https://dl.dod.cyber.mil/wp-content/uploads/stigs/zip/U_MS_Exchange_2013_STIG.zip

Item Details

Category: SYSTEM AND COMMUNICATIONS PROTECTION

References: 800-53|SC-6, CAT|III, CCI|CCI-001094, Rule-ID|SV-84625r1_rule, STIG-ID|EX13-MB-000160, Vuln-ID|V-70003

Plugin: Windows

Control ID: 01efbd3e80acc6bc52c1bef8e144a45fb89a02d7494e00af62c372831c728bb5