Mail quota settings must not restrict receiving mail.

From Exchange 2010 Mailbox Server STIG

SV-44011r2_rule Mail quota settings must not restrict receiving mail.

Vulnerability discussion

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.

Check content

Open the Exchange Management Shell and enter the following command: Get-MailboxDatabase | Select Name, Identity, ProhibitSendReceiveQuota If the value of 'ProhibitSendReceiveQuota' is set to an alternate value, and has signoff and risk acceptance in the EDSP, this is not a finding. If the value of 'ProhibitSendReceiveQuota' is not set to 'Unlimited', this is a finding.

Fix text

Open the Exchange Management Shell and enter the following command: Set-MailboxDatabase <'MailboxDatabaseName'> -ProhibitSendReceiveQuota 'Unlimited' If an alternate value is desired from ProhibitSendReceiveQuota, obtain signoff with risk acceptance and document in the EDSP.

Pro Tips

Lavender hyperlinks in small type off to the right (of CSS class id, if you view the page source) point to globally unique URIs for each document and item. Copy the link location and paste anywhere you need to talk unambiguously about these things.

You can obtain data about documents and items in other formats. Simply provide an HTTP header Accept: text/turtle or Accept: application/rdf+xml.