Specifying a reverse-path setting for forwarded messages

You can specify how the router handles messages that are forwarded by a user mail rule send copy to action. By default, delivery status reports (DSNs) are requested not to be sent to the email account that forwards the message by setting a null reverse-path. This can cause some spam filters to reject the message.

About this task

You can use the Configuration Settings document or the NOTES.INI file setting, RouterUserRuleForwardReversePath, to specify the reverse-path setting. If both settings are used, the NOTES.INI file setting takes precedence over the setting in the Configuration Settings document.


  1. Make sure you already have a Configuration Settings document for the server(s) to be configured.
  2. From the Domino® Administrator, click the Configuration tab and expand the Messaging section.
  3. Click Configurations.
  4. Select the Configuration Settings document for the mail server or servers you want to administer, and click Edit Configuration.
  5. Click the Router/SMTP > Restrictions and Controls > Delivery Controls tab.
  6. In the Reverse-path for forwarded mail field, choose one of these settings:
    • Set reverse-path to null -- Default setting. Delivery status reports are not sent.
    • Preserve existing value -- Leave the setting as is. The message originator, that is, the person who originally sent the message, may receive delivery failure reports.
      Note: There are other methods of requesting that delivery status notifications, or delivery reports, should not be sent for these forwarded messages. For example, if DSN is not enabled on an SMTP server, the default behavior for most SMTP servers is to send failure reports.
    • Use recipients Internet address -- Delivery failure reports are sent to the current recipient's Internet address, that is, the email account that forwards the message.
      Note: The Use recipients Internet address setting can cause loops.
    • Construct undeliverable return address -- Prepend "nobounce" to the recipient's Internet address resulting in a non-deliverable return address.
  7. Click Save and Close.