Okay, I guess you are technically correct from the point of view of the
internals of the mail system, but that seems like a really bad point of view
to be approaching this from. A message such as this being sent to users
should be correct from the normal point of view of the users. 

An appropriate wording would have been something like:
	"You are receiving this e-mail because you have been identified as
someone who either is currently using filters on MSU's legacy e-mail
service, old.mail.msu.edu, or has used filters in the past."

Just a simple change like that would have prevented this entire discussion.

> -----Original Message-----
> Chris,
> 
> The warning is technically *not* incorrect. We generated the 
> list of "mail filter users" based on the mere presence of a 
> .mailfilter file. If you've ever had a filter then you were 
> on the list. When you delete filter rules, the shell of the 
> rule remains. It looks like this:
> 
> [log in to unmask]
> import SENDER
> if ($SENDER eq "")
> {
>  SENDER=$FROM
> }
> 
> to "./Maildir/."
> 
> 
> That tells it to "filter" every message intended for you (if 
> you happen to be "sparty") into your main Inbox. We cannot 
> open up ever single .mailfilter file for two reasons. First 
> and foremost, because of the AUP, but also because it would 
> be too daunting of a task. There are over 9,000 mailfilters 
> in place and there are five of us working here right now.
> 
> Hope that helps.
> ./brm
> 
>