[SpamCop-List] Re: Brightmail spam filter - opinions?

[Michael Lefevre]

Johnnie wrote:
> "Michael Lefevre" <michael.spamcop at michaellefevre.com> wrote in message 
> news:cb91a4$2hl$1 at news.spamcop.net...
>
>> Brightmail is a compromise, suitable for large numbers of diverse
>> mailboxes and without losing too many wanted messages.
>
> Brightmail deletes WAY TOO MANY legitimate emails.  My experience is that it 
> deletes about 5% of the legitimate emails which is several a day for me. 
> Not an acceptable ratio.  I would say 0.1% would be the maximum (1 out of 
> 1,000 legitimate emails).

5% seems a bit high - I imagine it's less than that, across their entire
customer base.  But it's true that content-based filtering doesn't scale
well.  From your other post, it sounds like the ISP's implementation of it
isn't working with their IP-based filters, which they do apparently have.

-- 
Michael