This feature is available with artica version 1.4.100117
If you are under this release you need to upgrade your Artica version.
If this version is not released use the How to upgrade Artica to a nightly build ?
It restrict senders to use domains listed/managed in Artica database in the MAIL FROM:
This feature check both internals and externals senders so you need to use a dedicated server that marked has "trusted" if you want to receive messages from Internet users.
It useful when you run this configuration in ISP mode by handle many SMTP domains that able to prevent send SPAM or forged mails from your structure.
In this case Artica server is switched to an Outgoing SMTP relay only.
The schema bellow explain the SMTP routing structure.
To enable this feature :
- Click on the left menu on your organization.
- Choose your SMTP instance.
- Click on security settings tab.
On the security settings, click on "Sender computers restrictions rules" icon.
Check the Reject Senders Domains not listed in Local database option
