Discuss mailing list

[Niels Dettenbach <nd AT syndicat.com>]

Am Dienstag, 3. Januar 2012, 02:00:08 schrieb Amrit Panesar:
> I understand that part of Google's filtering algorithm includes reported
> messages from other users of their service. This is impossible to do with a
> handful of clients.
This is nonsense too - just take a look at the different and typical anti 
spam 
technologies around like hash based dcc, razor, pyzor, dkim, spf, 
sa-channels, 
a huge amount of different types of collaborating real time and dns based 
blocking lists and and and - plus (not at least) the commercial ones...

Typical anti-spam solutions typically consisting by a bundle of technologies 
and data sources today filters >99% of spam out without "false positives". 

The further rest of quality depends from the network and hardware ressources 
a 
mail provider is willing to spent his anti spam stage per single email / per 
user - and google did not nearly run the most ressources per single email / 
per user. Another problem is that there are environments where content based 
spam filtering is not allowed by law - except the user has the option to 
allow 
it.

But the major leaving problem (which even a "large amount of clients" could 
not solve) is that there are messages which could not be classified hardly 
from anyone as spam because the same message is ham for another user (i.e. 
mailing lists with bad policies etc.). 

btw:
I remember about my collegues from west africa / nigeria which did not get 
all 
or many of their personal or business ham mails through google, yahoo and 
others over years as such mailproviders did geographical discrimination of 
email users - this is why many africans still want/prefer to get internet 
access by a IP address registered at any geolocation in europe or northern 
america. This has nothing to do with a halfway of professional spam filtering 
- this is just for saving ressources on the providers side... 


cheers,


Niels.


-- 
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Niels Dettenbach
Syndicat IT&Internet
http://www.syndicat.com/

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