On Sun, Sep 07, 2003 at 11:09:57PM -0700, Steve Lamb wrote:
> On Mon, 8 Sep 2003 15:40:15 +1000
> Matthew Palmer <[EMAIL PROTECTED]> wrote:
> > On Mon, Sep 08, 2003 at 06:04:39AM +0100, Karsten M. Self wrote:
> > > I'm coming to the view that we're approaching the era where all mail is
> > > going to have to be subject to filtering, at the MTA level.
>
> > Depends on how useful you want your e-mail box to be. <g>
>
> It has been my experience that filtering at the MTA level has increased
> the usefulness of my mailbox considerably.
<aol> me too </aol>
stats from last week's mail.log (from my home mail server which handles mail
for about half a dozen people):
1 Bad HELO
10 RBL proxies.relays.monkeys.com
11 Recipient Domain Not Found
22 RBL relays.ordb.org
25 strict 7-bit headers
31 Relay access denied
32 RBL taiwan.blackholes.us
34 Sobig.F Virus
42 body checks
49 RBL spamdomains.blackholes.easynet.nl
56 header checks
61 RBL dnsbl.sorbs.net
182 IP Address in HELO
193 RBL brazil.blackholes.us
218 RBL blackholes.easynet.nl
271 Local access rule: Helo command rejected
342 RBL hongkong.blackholes.us
492 RBL dynablock.easynet.nl
924 RBL sbl.spamhaus.org
1080 Local address forgery
1099 Recipient address rejected
1133 Sender Domain Not Found
1771 RBL list.dsbl.org
1825 Dynamic IP Trespass
1902 RBL cn-kr.blackholes.us
2471 Local access rule: Client host rejected
3005 Need FQDN address
3581 Local access rule: Sender address rejected
4267 User unknown
25130 TOTAL
Spamassassin stats:
382 spam
4093 clean
4475 TOTAL
Percentages:
spam:non-spam (25512/29605) 86.17%
accepted spam (382/4475) 8.54%
rejected spam (25130/25512) 98.50%
i'm reasonably happy with that. 98.5% of all spam was rejected outright. only
382 spams (1.5%) made it through my postfix access lists, RBLs, etc to be
tagged by spamassassin.
these stats also demonstrate just how bad the spam problem has become. 86% of
all attempts to deliver mail to my server were spam, ~25500 spams and ~4100
legit messages.
if i wasn't blocking spam at the MTA, then at least half of those spams would
have ended up in MY personal mailbox (or, more likely, tagged by spamassassin
and saved into my spam.incoming folder)....about 13000 more spams than i
currently receive.
craig
ps: i love postfix. it has the best anti-spam features of any MTA.
pps: anyone who wants my simple spam-stats.pl script can get it from
http://taz.net.au/postfix/scripts/
