SMTP Sender Filter must be enabled.

From Exchange 2010 Edge Transport Server STIG

SV-43977r1_rule SMTP Sender Filter must be enabled.

Vulnerability discussion

Email system availability depends in part on best practices strategies for setting tuning configurations. Careful tuning reduces the risk that system or network congestion will contribute to availability impacts. Filters that govern inbound Email evaluation can significantly reduce SPAM, PHISHING, and SPOOFED Emails. Messages from blank senders, known SPAMMERS, or 0-day attack modifications must be enabled to be effective. Failure to enable the filter will result in no action taken. This setting should always be enabled.

Check content

Open the Exchange Management Shell and enter the following command: Get-SenderFilterConfig | Select Enabled If the value of 'Enabled' is not set to 'True', this is a finding.

Fix text

Open the Exchange Management Shell and enter the following command: Set-SenderfilterConfig -Enabled $true

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.