RE: [EXIM] some more details about spam

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Author: Paul Mansfield
Date:  
To: tcurdt, Exim users mailing list
Subject: RE: [EXIM] some more details about spam
On Tue, 10 Nov 1998, V. T. Mueller wrote:
> > (a) restrict the deliveries per message
>
> recipients_max = 24
> recipients_max_reject = true


sadly, a lot of modern spamming tools seem to
1) send from random-user@random-domaim, where random-domain is chosen from a
list of favourites (e.g. yahoo.com, msn.com, earthlink.net)
2) send to groups of 24 or so
3) vary the mail headers to make it harder for automated spam detectors to
recognise spam

sometimes it's not the spam that's the killer, it's the bounce messages from N
* 100000 (yes 10^5) recipients that fail to get through.


Paul


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