Well...I usually send email to postmaster@every.domain.in.header
- - thereby including postmasters, that have their sendmail
configured to allow arbitrary relaying (Ehh..usually I do ommitt
postmaster@vger.rutgers.edu if it is spam on the mailing list -
no reason to punish him for hosting the list, and he cannot do
much to it anyway).
Pretty often the user gets a free spanking, an I get written
apologies from the postmaster.
Local filtering is a good thing (sure is), but does
unfortunately not solve the problem (If you are on a modem to
some ISP's, then you most likely _have_ paied to download the
spam).
Making postmasters aware of the problem (Not by spamming them -
by asking them in a nice way) is the only way (imho) to cut down
the amount of spam. Especially it is a good thing if an email
has been relayed to help the postmaster on the relaying host(s)
to get his/her sendmail.cf correct....Most likely he/she is as
annoyed by relaying the spam, as we are by recieving it.
(In a single case the postmaster _was_ the spammer - leaving
another domain hopelessly in the filters and eventually the
"black hole")
Speaking of spam, check out http://www.cauce.org/ - if you have
not allready done so.
Just my DKK 0.25
- --thomas
On 25-Feb-98 Richard Gooch wrote:
> I have been running a spam filter for several months now,
> which cut my
> spam to 0 for a couple of months. I've now noticed an increase
> in spam
> sent to mailing lists such as linux-kernel. I'd like to put in
> a plea
> to the list maintainers that some kind of spam filtering be
> inserted
> at the input end of the list. The most recent piece of rubbish
> I've
> seen come in:
>
> 5t53221@mci.com writes:
>> Authenticated sender is <5t53321@mci.com>
>> Subject: 2-24
>> Mime-Version: 1.0
>> Content-Type: text/plain; charset=3D"us-ascii"
>> Content-Transfer-Encoding: 7bit
>>
>> EMAIL MARKETING WORKS!!
>
> [Offal Deleted]
>
> Now, if you look at the header:
>
>> From: 5t53221 <5t53221@mci.com>
>> Sender: owner-linux-kernel@vger.rutgers.edu
>> To: <linda@net-connect.net>
>> Date: Wed, 25 Feb 1998 02:34:58 -0600
>
> This wasn't sent to the linux-kernel list, either in a "To:"
> or a
> "Cc:" line. So one simple recipe would be to send messages
> without
> such header lines to /dev/null.
>
> Another recipe could be to not allow postings by people not on
> the
> mailing list. I thought that this was already done?
>
> Yet another recipe could be to check the domain in the "From:"
> address
> and see if there is a match somewhere in the received path
> (i.e. a
> simple forgery test).
>
> So how about it guys? I have the feeling that spammers are
> targeting
> more and more mailing lists.
>
> Regards,
>
> Richard....
>
> -
> To unsubscribe from this list: send the line "unsubscribe
> linux-kernel" in
> the body of a message to majordomo@vger.rutgers.edu
-----BEGIN PGP SIGNATURE-----
Version: 2.6.3ia
Charset: noconv
iQCVAwUBNPSGq8QLb2bL5bWVAQH+dgP7Bk845qGiha/Cw40kOxCIV67et1K4GGQw
p0IR5BfilFGvJheHmNgEiD4MiE3JvVdome252mdKS8bug/KJBR2yPWoVAifxi8Er
Gk1TMLhm/ev/gwbvWwKr3EJlWAFzsXs/bIYUPCTrJaPivNXo1zUwNA0rlfgtVbpO
C4h368bp4FA=
=ImVx
-----END PGP SIGNATURE-----
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.rutgers.edu