Hello Michiel,

Tuesday, June 6, 2006, 3:10:52 AM, you wrote:

>  
> Crew,
>  
>  
>   
> I'm a bit concerned about the amount of spam that Sniffer's not 
> getting. It used to be a near 99% catch rate, but now it looks like it's  
> down to 70%...?
>  
>  
>  
> I opened my own mailbox  this morning and saw 5 false negatives,
> while 11 others were caught by  Sniffer. Haven't checked with my
> clients yet, but I think it will be the  same.
>  
>  
>  
> Is there an explanation, besides another  spam storm?

IMO, the spam storm explanation is certainly applicable today - we've
seen a few spikes, this time bunched together in an unusual - nearly
continuous chain... still working on a theory for that.

In general, the image based spam trend has given everyone more
challenges.. I'm working on engine upgrades that will be out soon to
help with those and future threats.

Another thing that may have effected the last few days is that our
primary spam-trap processor "ate itself" causing large backlogs and
heavy fragmentation. There were a few hours (off-and-on) where the box
was not processing traffic so we were delayed responding with new
rules.

I've changed the software on that box and cleaned up the damage and it
is now happily sustaining ~900 msgs/minute so I don't expect further
problems from it in the short term.

Hope this helps,

_M

-- 
Pete McNeil
Chief Scientist,
Arm Research Labs, LLC.


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