How to anti Spam

Currently there is no foolproof way to prevent spam. experts recommend
that Internet users try the following methods to prevent spam:

Disguise e-mail addresses posted in a public electronic place.

CDT received the most spam just by placing an e-mail address at the
bottom of a webpage. Spammers "harvest" these addresses with
computer programs that collect and process addresses and add them to
spam mailing lists. If a user must post his/her e-mail address in a
public place, it is useful to disguise the address through simple means
such as replacing "example@domain.com" with "example at domain
dot com" or other variations such as the HTML numeric equivalent, in
which "example@domain.com" could be written "example@d
omain.com."

Opt out of member directories that may place your e-mail address
online. If your employer places your e-mail address online, ask the
Webmaster to make sure it is disguised in some way.


Read carefully when filling out online forms requesting your e-mail
address, and exercise your choice.

If you don't want to receive e-mail from a Web site operator, don't
give them your e-mail address unless they offer the option of declining
to receive e-mail and you exercise that option. If you are asked for
your e-mail address in an online setting such as a form, make sure you
pay attention to any options discussing how the address will be used.
Pay attention to check boxes that request the right to send you e-mails
or share your e-mail address with partners. Read the privacy policies
of Web sites. If you suspect that a Web site has violated its privacy
policy, you can report it to your state attorney general or the Federal
Trade Commission.


Use multiple e-mail addresses.

When using an unfamiliar Web site or posting to a newsgroup, establish
an e-mail address for that specific purpose. Alternatively, instead of
just using one or two e-mail addresses, you can use "disposable
e-mail addresses," which consolidate e-mail in a single location but
allow you to immediately shut off any address that is attracting spam.
By recording which disposable address was used at which web site, one
can track what sites are causing spam. Many Web sites are now providing
free e-mail accounts. A search in Google Directory for "disposable
e-mail addresses" provides a list of e-mail providers designed for
one-time use e-mails.


Use a filter.

Many ISPs and free e-mail services now provide spam filtering. While
filters are not perfect, they can cut down tremendously the amount of
spam a user receives.


Short e-mail addresses are easy to guess, and may receive more spam.

At least one spammer tried to guess the e-mail addresses used in this
study by sending mail to short and common addresses. E-mail addresses
composed of short names and initials like bob@ or tse@, or basic
combinations like smithj@ or toms@ will probably receive more spam.
E-mail addresses need not be incomprehensible, but a user with a common
or short name may want to modify or add to it in some way in his or her
e-mail address.


http://spam.hotdir.biz/

Re: How to anti Spam

On comp.mail.misc, in <1150696604.299826.40870@c74g2000cwc.googlegroups.com>, "jetbrains@gmail.com" wrote:
> Path: text.usenetserver.com!atl-c01.usenetserver.com!news.usenetse rver.com!atl-c05.usenetserver.com!news.usenetserver.com!post news.google.com!c74g2000cwc.googlegroups.com!not-for-mail
> From: "jetbrains@gmail.com"

No name in the from header.

Throwaway, anonymous gmail address.

Which could be non-existent or belong to someone else.

But don't mail it. You'd probably get spammed to death
or harassed through anonymous remailers.

> Newsgroups: comp.mail.misc
> Subject: How to anti Spam

I already know how to do that:

http://home.earthlink.net/~alanconnor/elrav1/cr.html

Challenge-Response mail systems cannot be beaten by
trolls or spammers.

That's not what's on my Usenet mailbox, which is a variant
designed to repel the repeated assaults of many idiot trolls
without even logging their feeble attempts.

> Date: 18 Jun 2006 22:56:44 -0700
> Organization: http://groups.google.com

Only trolls and clueless newbies post through GG.

> Lines: 69
> Message-ID: <1150696604.299826.40870@c74g2000cwc.googlegroups.com>
> NNTP-Posting-Host: 61.173.154.232

$ host 61.173.154.232
61.173.154.232 does not exist, try again

No such address. Whois will give us the range that
IP would be in, but it may be a complete forgery:

$ whois 61.173.154.232
% [whois.apnic.net node-1]
% Whois data copyright terms http://www.apnic.net/db/dbcopyright.html

inetnum: 61.172.0.0 - 61.173.255.255
netname: CHINANET-SH
descr: CHINANET Shanghai province network
descr: Data Communication Division
descr: China Telecom
country: CN
admin-c: CH93-AP
tech-c: XI5-AP
mnt-by: APNIC-HM
mnt-lower: MAINT-CHINANET-SH
mnt-routes: MAINT-CHINANET-SH
status: ALLOCATED PORTABLE
changed: hm-changed@apnic.net 20060427
source: APNIC

person: Chinanet Hostmaster
nic-hdl: CH93-AP
e-mail: anti-spam@ns.chinanet.cn.net
address: No.31 ,jingrong street,beijing
address: 100032
phone: +86-10-58501724
fax-no: +86-10-58501724
country: CN
changed: lqing@chinatelecom.com.cn 20051212
mnt-by: MAINT-CHINANET
source: APNIC

person: Wu Xiao Li
address: Room 805,61 North Si Chuan Road,Shanghai,200085,PRC
country: CN
phone: +86-21-63630562
fax-no: +86-21-63630566
e-mail: ip-admin@mail.online.sh.cn
nic-hdl: XI5-AP
mnt-by: MAINT-CHINANET-SH
changed: ip-admin@mail.online.sh.cn 20010510
source: APNIC


> Mime-Version: 1.0
> Content-Type: text/plain; charset="iso-8859-1"
> X-Trace: posting.google.com 1150696609 29905 127.0.0.1 (19 Jun 2006 05:56:49 GMT)
> X-Complaints-To: groups-abuse@google.com
> NNTP-Posting-Date: Mon, 19 Jun 2006 05:56:49 +0000 (UTC)
> User-Agent: G2/0.2
> X-HTTP-UserAgent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1),gzip(gfe),gzip(gfe)
> Complaints-To: groups-abuse@google.com
> Injection-Info: c74g2000cwc.googlegroups.com; posting-host=61.173.154.232; posting-account=tNceEA0AAABn3J6HSSZXCNpsu0ZcNJaN
> Xref: usenetserver.com comp.mail.misc:159755
> X-Received-Date: Mon, 19 Jun 2006 01:56:49 EDT (text.usenetserver.com)