[RAS] email problem on nebka?

[Thomas Krichel]

  Christian Zimmermann writes


> 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.

  Spam uses forged return addresses. 

> Now what if the user BenniemignonManning at motivateus.com actually existed? 

  If the message is spam, it's return address does not exist.

> 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.

  Yes, because nebka does not spam filter.

  Cheers,

  Thomas Krichel                    http://openlib.org/home/krichel
                                RePEc:per:1965-06-05:thomas_krichel
  phone: +7 383 330 6813                       skype: thomaskrichel