Christian Zimmermann writes
2008-02-25 15:32:52 1JTk0K-0003Cs-5M <= BenniemignonManning@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@stepince98f3bc 2008-02-25 15:33:00 1JTk0K-0003Cs-5M ** krichel@openlib.org <root@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@openlib.org <root@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@motivateus.com <BenniemignonManning@motivateus.com> R=dnslookup T=remote_smtp: SMTP error from remote mail server after RCPT TO:<BenniemignonManning@motivateus.com>: host emailguardian.awecomm.com [208.69.90.7]: 550 cuda_nsu 5.1.1 <BenniemignonManning@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@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@motivateus.com, which rejects as well. the message is frozen.
Spam uses forged return addresses.
Now what if the user BenniemignonManning@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