On 8 Feb 2004 at 23:05, Greg Connor wrote:
Here are some stats on how often our SPF exists: macro has been triggered.
This shows an increase in the amount of mailers checking SPF at the
receiving side. However, the data might indicate other things as well,
such as overall spam activity for that day.
(Since all mail coming from *(_at_)altavista(_dot_)com is forged, it's all
coming from
spammers at this point :) Our MX servers for this non-email domain get
about 3M sendmail connections per day, about 1M of these are bounces coming
back to <%randomchars(_at_)altavista(_dot_)com> saying the forged message
could not be
delivered. )
Same for me and baschny.de. But not as many yet as altavista.com of
course. Even if my domain is pretty unknown, it sadly seems to be used
heavily (around 200k sendmail connections per day with "User unknown"
replies). I changed my "User unknown" message to
550 5.1.1 User unknown, see http://www.baschny.de/spam/
so that affected users that try to reach the forged sender can read about
the problem where I also refer to SPF.
There was an all-time high of 643 yesterday (Feb 7). Not quite 1M but it
shows that SPF is proven to reject forged mail.
Indeed it does.
(...)
214 28-Jan-2004
156 29-Jan-2004
221 30-Jan-2004
409 31-Jan-2004
518 01-Feb-2004
223 02-Feb-2004
309 03-Feb-2004
540 04-Feb-2004
717 05-Feb-2004
349 06-Feb-2004
643 07-Feb-2004
Here are similar stats for my baschny.de domain:
4 Jan 28
5 Jan 29
109 Jan 30
51 Jan 31
137 Feb 01
159 Feb 02
173 Feb 03
104 Feb 04
166 Feb 05
65 Feb 06
183 Feb 07
124 Feb 08
Other interesting statistic is the amount of unique DNS-Servers that
made those queries. In my case, 90 different DNS-clients have connected
from 73 different domains. Not bad for a start.
--
Ernesto Baschny <ernst(_at_)baschny(_dot_)de>
http://www.baschny.de - PGP: http://www.baschny.de/pgp.txt
Sao Paulo/Brasil - Stuttgart/Germany
Ernst(_at_)IRCnet - ICQ# 2955403
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