I want to set up a rule so that any message sent by a certain server (in my case, an internal application server that sends workflow notifications) would be placed into a subfolder. A slight issue is that from header is being set to the email address of the co-worker initiating the change; if I inspect message headers, this is the information I see:
Received: from appserver.example.com (..)
by mailserver.example.com (..) with Microsoft SMTP Server
...
From: coworker <coworker@example.com>
Reply-To: coworker <coworker@example.com>
Return-Path: coworker@example.com
So I want to dump all emails sent by appserver.example.com to be filtered. My SMTP terminology is lacking, but I think I may be after filtering by MSA or MTA.