[SpamCop.net - protecting the internet through technology]

[SC-Help] Re: Spamcop failing to detect true originating IP

Mike Easter MikeE at ster.invalid
Wed Jul 13 15:51:36 EDT 2005


wskrispy wrote:

> Hold on a sec Ellen and N. Miller-- if you look at the entire message
> at tracker
>
http://www.spamcop.net/sc?id=z785186974zfb5c4d04f5694f362a90b200bac251bfz;action=display
>   you will see that in the header block below the SA Content Analysis
> there is a third Received header which does in fact identify the
> connecting IP (85.40.108.210). Why didn't Spamcop use this and
> proceed?

Actually what you are describing as a 'third Received header' is a
/first/ Received header traceline of the *original* item, which your
provider's server calls

Content-Description: original message before SpamAssassin

of the mime structure of the attachment.  That's what I was describing
in news:db2gtt$g2t$1 at news.spamcop.net

Mike Easter wrote:
> This structure is thus found:
>
> topheaders
> body1
> attachment headers
> body2
> AVG info

> whereas the attachment headers show the source
> IP of the propagation.


<resume wskrispy wrote:>
> Ellen said "For some reason and for some spams, your server will
> print 2 received headers as above rather than showing the connecting
> IP as it does for other spams". This is not so. All these spams have
> this header block eventually showing the connecting IP.

You are saying that all of 'these' spams have attachment headers which
show the source IP just like the example item which is actually a viral
propagation, not a 'simple' or regular spam per se.

Then all you will have to do is find a technique to isolate those
original 'attachment' headers, which are also contiguous with the
spambody [see body2 above],  to submit to the parser.  In such
isolation, the parser can not only find the source IP but also any
contained spamvertiser URLs.


-- 
Mike Easter
kibitzer, not SC admin




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