Kai Schaetzl writes:
> Dan Barker wrote on Mon, 20 Aug 2007 09:05:44 -0400:
> 
> > a) Investigate the possibility of FP's due to this change. It "looks" OK to
> > me, but I don't have a large corpus of non-bounce delivery status
> > notifications against which to test (er, ah, I have none<g>)
> 
> As this rule *wants* to match non-malware bounces it would be hard to define 
> an FP in this case. ;-)
> Actually, I think you could make it much more generic without creating FPs.
> 
> /Delivery Status Notification/
> /Delivery Failure Notification/
> 
> ->
> 
> /Delivery.*Notification/
> 
> should be ok to use. There is a slight chance it matches a "Delivery 
> Notification" that comes from UPS or a cargo carrier, in case they send out 
> something like this, but at least I haven't yet seen any.

actually, it's better to keep these Subject rules as *non*-generic
as possible -- as you note, "notifications" about "deliveries"
are not rare, and FPs are best avoided.

I'd even suggest:

  /^Delivery Status Notification/
  /^Delivery Failure Notification/

--j.

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