Configure Outgoing filtering for Multiple Domains from the Same IP Addresses

When using the same IP addresses for multiple domains sending through the filter, all traffic will be assigned to the domain with the IP outbound user/authentication method configured. To allow outbound traffic to be logged against the correct sending domain within the filter, re-authentication should be used. The connection is authorized by the IP address user/method and the settings and logging are applied by the re-authenticating user/method.

Re-authentication is only possible for primary domains. Alias domains may still be able to send mail, however, logging will be unavailable for any messages with a sender address not within the primary domain.

Add the IP user to the first domain

  1. In the Super-Admin or Admin Level Control Panel, click on Outgoing > Manage Authentication or Domain Level Control Panel, click on Outgoing > Manage Users
  2. In the Add a user section add the sending IPs to the IP address field (for details, see Add an Outgoing User/Authentication Method)
  3. Click on Add & Configure
  4. At the bottom of the page, set Re-authenticate as to Sender domain:
  5. Click Save

Add all additional authenticating domain users sending from the IP address in step 2 above

  1. In the Super-Admin or Admin Level Control Panel, click on Outgoing > Manage Authentication or Domain Level Control Panel, click on Outgoing > Manage Users
  2. In the Add a user section, click on the Authenticating Domain tab
  3. Enter the Additional Domain name and a Password (the secure password should be entered here but is not used in this specific scenario) - see Add an Outgoing User/Authentication Method for setting details
  4. Click on the dropdown to the right of the Add button and select Add and Configure
  5. At the bottom of the page, tick the Re-authentication permitted box:
  6. Click Save