[FIX] discuss, cmdline: update for static outgoing mail addresses

This changed for Odoo 15.0 in odoo/odoo#61853 and the docs didn't
reflect that change.

MT-52 @moduon

closes odoo/documentation#1469

X-original-commit: 084fb777f9
Signed-off-by: Antoine Vandevenne (anv) <anv@odoo.com>

content/applications/productivity/discuss/advanced/email_servers.rst

@@ -136,20 +136,38 @@ Instead, you can also configure Odoo to do something similar by itself:
     .. image:: media/alias_domain.png
        :align: center
 
+#.  Click on *Outgoing Mail Servers*
+
+#.  Create a new one.
+
+#.  Fill its *From Filter*.
+
+    .. image:: media/outgoing_server_from_filter.png
+       :align: center
+
+    * Use a domain (such as ``mycompany.example.com``) to keep the original "From"
+      address for mails that come from that domain.
+
+    * Use an address (such as ``outgoing@mycompany.example.com``) to allow only
+      that outgoing address.
+      
+    * Keep it empty to use this server for any email address.
+
+    With this configuration in place, if Odoo sends an email that doesn't match any
+    of the *from filters*, it will alter the email's "From" before sending it to
+    the MTA.
+
+    It will use the default outgoing email address, composed like this:
+    ``{mail.default.from}@{mail.catchall.domain}``.
+
 #.  In developer mode, go to :menuselection:`Settings --> Technical -->
     Parameters --> System Parameters`.
 
-#.  Add one system parameter from these:
+#.  Add these system parameters:
 
-    * If you want *all* your outgoing messages to use the same "From" address,
-      use the key ``mail.force.smtp.from`` and set that address as value
-      (such as ``outgoing@mycompany.example.com``).
+    * ``mail.default.from``: local part of default outgoing email address.
 
-    * If you want to keep the original "From" address for emails that use your
-      same domain, but change it for emails that use a different domain, use
-      the key ``mail.dynamic.smtp.from`` and set as value the email address
-      that should be used in those cases (such as
-      ``outgoing@mycompany.example.com``).
+    * ``mail.catchall.domain``: domain part of default outgoing email address.
 
 .. _discuss/email_servers/inbound_messages: