On 2010-12-29 20:50, Marc Perkel wrote:
On 12/29/2010 11:10 AM, David F. Skoll wrote:
On Wed, 29 Dec 2010 09:33:25 -0800
Marc Perkel<supp...@junkemailfilter.com> wrote:
Yes - there's no point in doing DNS blacklist lookups on yahoo,
hotmail, and gmail as well as thousands of other mixed source
providers.
I disagree. I have a strong feeling that some of those providers
route less-trustworthy mail through certain IP addresses and
more-trustworthy mail through others. For example, some of Yahoo's
servers are listed in our "good" list while others are listed in our
"bad" list. The difference in observed behaviour between the two sets of
Yahoo servers is very dramatic.
We don't outright block hosts in the bad list, but we do add points.
Regards,
David.
Hi David,
My idea doesn't preclude you from having a "bad yahoo" list and adding
points. I'm just saying that when it comes to checking other blacklists
to see if any yahoo server is listed it's a waste of resources. If it's
a yahoo server of any flavore why look it up on the blacklists?
coz we can't be bothered to do otherwise?
