[RAS] email problem on nebka?

[Christian Zimmermann]

I have no doubt that your box is getting less spam. But just look at this 
exerpt of  /var/log/exim4/mainlog on nebka:

2008-02-25 15:32:52 1JTk0K-0003Cs-5M <= BenniemignonManning at motivateus.com 
H=78-3-74-131.adsl.net.t-com.hr (stepince98f3bc) [78.3.74.131] P=smtp 
S=2044 id=381f701c877ed$97799020$1e01a8c0 at stepince98f3bc
2008-02-25 15:33:00 1JTk0K-0003Cs-5M ** krichel at openlib.org 
<root at authors.repec.org> R=dnslookup T=remote_smtp: SMTP error from remote 
mail server after end of
data: host snefru.openlib.org [128.252.177.195]: 550 Rejected
2008-02-25 15:33:00 1JTk0K-0003Cs-5M ** kurmanov at openlib.org 
<root at authors.repec.org> R=dnslookup T=remote_smtp: SMTP error from remote 
mail server after end of data: host snefru.openlib.org [128.252.177.195]: 
550 Rejected
2008-02-25 15:33:00 1JTk0S-0003Cw-J8 <= <> R=1JTk0K-0003Cs-5M 
U=Debian-exim P=local S=3250
2008-02-25 15:33:00 1JTk0K-0003Cs-5M Completed
2008-02-25 15:33:02 1JTk0S-0003Cw-J8 ** benniemignonmanning at motivateus.com 
<BenniemignonManning at motivateus.com> R=dnslookup T=remote_smtp: SMTP error 
from remote mail server after RCPT 
TO:<BenniemignonManning at motivateus.com>: host emailguardian.awecomm.com 
[208.69.90.7]: 550 cuda_nsu 5.1.1 <BenniemignonManning at motivateus.com> 
User unknown; rejecting
2008-02-25 15:33:02 1JTk0S-0003Cw-J8 Frozen (delivery error message)

The way I undertand the above:
BenniemignonManning at motivateus.com or someone forging that address sends a 
message to root. That message is forwarded to krichel and kurmanov. But 
both reject, and the message is bounced to 
BenniemignonManning at motivateus.com, which rejects as well. the message is 
frozen.

Now what if the user BenniemignonManning at motivateus.com actually existed? 
Then he would received message, could flag it as spam. Or his system could 
flag it at spam before reaching him. And where is the flagged message 
coming from? nebka.


Christian Zimmermann                                     FIGUGEGL!
Department of Economics
University of Connecticut
341 Mansfield Road, Unit 1063
Storrs, CT 06269-1063
http://ideas.repec.org/zimm/   christian.zimmermann at uconn.edu
http://ideas.repec.org/e/pzi1.html

On Tue, 26 Feb 2008, Thomas Krichel wrote:

>
>
>  Christian Zimmermann writes
>
>> If SpamAssassin would just silently delete this message, there would not be
>> a problem.
>
>  SpamAssassin does just that, it assassinates spam. This is the
>  way to get rid of it. Ignoring spam is not a way to get rid of
>  it. Nowadays my boxes only get a fraction of the spam they
>  used to get. This make the CPU time used of spam checking
>  worth the cost.
>
>  Just put up the same scenario on nebka.
>
>
>
>
>  Cheers,
>
>  Thomas Krichel                    http://openlib.org/home/krichel
>                                RePEc:per:1965-06-05:thomas_krichel
>  phone: +7 383 330 6813                       skype: thomaskrichel
>