Vulnerability V-228383

Note: This requirement applies to IMAP4. IMAP Secure is not restricted and does not apply to this requirement. Review the Email Domain Security Plan (EDSP) or document that contains this information. Determine the Maximum Recipients per Message value. Open the Exchange Management Shell and enter the following command: Get-ReceiveConnector | Select Name, Identity, MaxRecipientsPerMessage For each Receive connector, evaluate the "MaxRecipientsPerMessage" value. For each Receive connector, if the value of "MaxRecipientsPerMessage" is not set to "5000", this is a finding. or If the value of "MaxRecipientsPerMessage" is set to a value other than "5000" and has signoff and risk acceptance in the EDSP, this is not a finding.

Update the EDSP to specify the "MaxRecipientsPerMessage" value or verify that this information is documented by the organization. Open the Exchange Management Shell and enter the following command: Set-ReceiveConnector -Identity <'IdentityName'> -MaxRecipientsPerMessage 5000 Note: The <IdentityName> value must be in single quotes. or Enter the value as identified by the EDSP that has obtained a signoff with risk acceptance. Repeat the procedure for each Receive connector.