Re: Asia and SPAM (was: RBL blocking of rogers.com valid usere-mail addresses?)

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On Fri, 25 Apr 2003 08:43:08 +0800, Ladislav Bodnar wrote:

> I live in Asia (and have a dynamic IP assigned to me 
> by my ISP) and I find that an increasing number of my emails don't reach 
> their destinations.
> 
> Yes, Asian spam is annoying, but if I look in my inbox, a good 90% of it still 
> originates in the US.

Asia *is* the major source of SPAM/UCE.

In your case, thank all those customers of HiNet who abuse the
network and flood it with SPAM or who run open relays and insecure
machines that are abused.

Blame your provider for not taking proper action upon receiving
abuse reports (HiNet have got many abuse notifications from me, too,
in the past).

It can't be repeated often enough -- whether it applies in this case
or not -- a common misconception about the origin of SPAM/UCE mail
is due to the recipient not reading the message headers correctly. 

The used e-mail sender address can be chosen arbitrarily. Often the
spammer just uses a domain name like @excite.com or @yahoo.com,
which does exist, but a mail address which does not exist.

The language which is used in the message doesn't count either.
English SPAM is posted from hosts in .cn, .tw, .kr, or .br
(.telesp.br increasingly popular) as well as German SPAM or Asian
SPAM. I'd like to point out that it is incredibly stupid to send
me content which I cannot even read.

Faked host names that are used as a greeting during contact with the
first mail server, are another source of confusion. The real IP
address often is in brackets. If you want to find out from where a
message was sent, rely on IP addresses and the "whois" or "awhois"
utility. Don't rely on what looks like valid host names.

My mailbox at Yahoo!Mail receives 6-7 MiB of unsolicited commercial
e-mail in just a few days. A lot of the SPAM has been from Taiwan,
Korea, China, Brazil, but also England (NTL is getting popular,
probably open relays on cable modem). That fills the mailbox
quickly. Once it's filled, no one of the spammers cares about the
bouncing messages. They don't even see the bouncing messages, since
they don't use valid return addresses.

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