I have multiple email sorting rules in Outlook, which mostly work, but over the past few days I am seeing unexpected behavior. Specifically, sorting is applied incorrectly when forwarding messages sent to a specific distribution group.
There are 2 distribution groups, one agency wide external group (Group 1) and one departmental internal group (Group 2). I am a member of both groups.
My mail rule in question is "after message arrives, mail sent FROM Group 1 should be moved TO [a subfolder in my inbox] and stop processing more rules." Not complicated. However, part of my job is to forward some of these messages to Group 2. Over the past few days, every message from Group 1 that I forward to Group 2 has been sorted back into the same subfolder.
This is problematic because (1) it causes me to worry that I accidentally sent the message to Group 1, which would be embarrassing! and (2) the mail sorting rules should absolutely not be applied to a message that has been forwarded. The behavior is new; I have had this rule in use since 2015. Prior to this, forwarded messages were left in my inbox, as expected.
Attempting to search for this issue returns many results telling me how to use rules to forward mail but no results confirming that this is a known issue.