The only rule I have is:

Apply this rule after the message arrives
with 'undelivered' or
'Mail delivery failed' or
'Mail delivery failure' or
"FAILURE NOTICE' or
'Returned mail' or
'Undelivered:' or
'(Failure)' or
'Returned to Sender' or
'Undeliverable:' or
'undeliverable' or
'warning:' or
'Your message did not reach some or all of the intended recipients' or
'Undeliverable'
move it to the Spoofed folder

An example of email that is not having the rule applied:

From: System Administrator
Sent: Wednesday, October 24, 2007 2:15 PM
To: REDACTED
Subject: Undeliverable: French rock star Bertrand Cantat released from
prison


Your message did not reach some or all of the intended recipients.

Subject: French rock star Bertrand Cantat released from prison
Sent: 10/24/2007 2:25 PM

The following recipient(s) cannot be reached:

REDACTED on 10/24/2007 2:15 PM
The e-mail account does not exist at the organization this
message was sent to. Check the e-mail address, or contact the recipient
directly to find out the correct address.
back2server.back2.local #5.1.1

The above mail is ending up in my Junk folder, not the Spoofed filter. I
have set my Junk Mail to "No automatic filtering" I understand that even
with that settting, mail from blocked senders is still sent to the Junk
folder. But "System Administrator" does not appear in my blocked senders
folder. (In fact, appropriately, Outlook prohibits adding "System
Administrator" to the blocked senders folder.)

If I select "Run Rules Now," then the above e-mail is properly moved to the
Spoofed folder. So the rule is right. It seems like Outlook for some reason
considers this email as spam (even though I have "No automatic filtering"
selected) and pre-empting my rule...

Any suggestions?

Thanks for your help!

Tom