Overview

If you're having trouble managing incoming emails on your server, particularly in identifying emails that do not originate from your own domain, a solution is to add an [EXTERNAL] prefix in the subject line of these emails.

Solution

To add an [EXTERNAL] prefix in the subject line of all incoming emails that do not originate from your own domain, follow these steps:

1. Please click on the following link to understand the general instructions for creating rules for incoming emails: Create an Incoming Rule.
2. Once you have reviewed the instructions, please create the incoming rule similar to the following example rule: