Hi Brian, Thanks for explanation on what's going on behind the scenes. It makes sense to me. Even thought I was notified <per message below), I am really not affected because I really don't have any filters - just the shell of a filter. Therefore, I don't need to take any steps. Is that a fair assessment? Firm. -----Original Message----- From: MSU Network Administrators Group [mailto:[log in to unmask]] On Behalf Of Brian Martinez Sent: Thursday, April 23, 2009 10:22 AM To: [log in to unmask] Subject: Re: [MSUNAG] Incorrect Warning About Mail Filters Chris Wolf wrote: > I just received the warning from ATS (below) that I am using filters on > old.mail.msu.edu. I did not believe that I have any filters, so I logged on > to old.mail.msu.edu to check. When I go to the Filters screen, the heading > "Existing mail filters:" is followed by an empty box, as I expected. > > Have others received an incorrect warning about this? I have used filters on > MSU mail in the past, but have not had any for a couple of years. Does this > somehow cause the false warning for my account? > 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