Details

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.

Failure to allow mail receipt may impede users from receiving mission-critical data.

Solution

Open the Exchange Management Shell and enter the following command:

Set-MailboxDatabase -Identity <'IdentityName'> -ProhibitSendReceiveQuota Unlimited

Note: The value must be in quotes.

or

The value as identified by the EDSP that has obtained a signoff with risk acceptance.

Supportive Information

The following resource is also helpful.

• https://dl.dod.cyber.mil/wp-content/uploads/stigs/zip/U_MS_Exchange_2013_Y21M01_STIG.zip

This security hardening control applies to the following category of controls within NIST 800-53: System and Communications Protection.This control applies to the following type of system Windows.

References

• 800-53|SC-5(1)
• CAT|III
• CCI|CCI-001094
• Rule-ID|SV-207297r615936_rule
• STIG-ID|EX13-MB-000155
• STIG-Legacy|SV-84623
• STIG-Legacy|V-70001
• Vuln-ID|V-207297

Source

• Tenable.com/audits