[Gross] perpetual match
jesse.thompson at doit.wisc.edu
Wed Nov 7 14:33:08 EET 2007
Eino Tuominen wrote:
> Jesse Thompson wrote:
>> Next, I checked the gross logs. There were 0 Grey entries for these
>> IP addresses going back 30 days. hmmm
> Check that you do have update = grey in config (it's the default).
>> But why does it only happen to these few mailers? Surely this would
>> be more random?
> It really is possible to have this kind of deterministic behaviour with
> bloom filters. Suppose you have a client that is constantly on some
> blocklist, and who regurarly sends email to the same recipient in your
> organization. The triplet is always the same and it always is present in
> your bloom filter. Suppose that these other triplets collide with the
> earlier triplet. The result is just what you are seeing.
>> Could this be leading to the bloom filter false positives?
> I'm afraid so.
How likely will raising the filter bits setting help?
-------------- next part --------------
A non-text attachment was scrubbed...
Size: 3340 bytes
Desc: S/MIME Cryptographic Signature
More information about the Gross