[IMP] Email: update mailjet parameter note

closes #11437

Signed-off-by: Samuel Lieber (sali) <[email protected]>

content/applications/general/email_communication/mailjet_api.rst

@@ -195,18 +195,26 @@ Connection`.
    :alt: Odoo outgoing email server settings.
 
 .. important::
-   In order for the notifications feature to work using Mailjet, there are three settings that need
-   to be set in Odoo.
+   For the notifications feature to work using Mailjet, with a custom domain, the following settings
+   need to be configured:
 
-   #. The :guilabel:`From Filter` needs to be set on the server configuration. It is recommended
-      to set it as a domain and not a full email address. It should match the domain in the two
+   #. The :guilabel:`From Filter` needs to be set on the server configuration. It is recommended to
+      set it as a domain and not a full email address. It should match the domain in the two
       proceeding steps. More information can be referenced :ref:`here
       <email_communication/from_filter>`.
    #. The :guilabel:`mail.default.from` system parameter must have the value
       `notifications\@yourdomain.com`.
    #. The :guilabel:`mail.default.from_filter` system parameter must have the value
-      `yourdomain.com`. Replace `yourdomain` with the custom domain for the Odoo database. If there
-      isn't one, then use the :guilabel:`mail.catchall.domain` system parameter.
+      `yourdomain.com`. Replace `yourdomain` with the custom domain.
+
+   If utilizing a database domain, and **not** a custom domain, the following settings need to be
+   configured:
+
+   #. The :guilabel:`From Filter` needs to be set on the server configuration. It should match the
+      domain in the two proceeding steps.
+   #. The :guilabel:`mail.default.from` system parameter must have the value `notifications`.
+   #. The :guilabel:`mail.default.from_filter` system parameter must have the value
+      `yourdomain.odoo.com`.
 
    For more information see :ref:`Using a default email address <email_communication/default>`.