From: arisawa@ar.aichi-u.ac.jp
To: Fans of the OS Plan 9 from Bell Labs <9fans@cse.psu.edu>
Subject: [9fans] detecting spam
Date: Sat, 27 Oct 2007 11:51:09 +0900 [thread overview]
Message-ID: <98676E7E-775A-411A-B018-A3D238379E57@ar.aichi-u.ac.jp> (raw)
In-Reply-To: <cd753b523f2e4f29ace572ab6cfd63ca@plan9.bell-labs.com>
Hello,
I receive many SPAMS everyday.
Most of them are from IP based dynamic FQDN.
Therefore detecting SPAM from FQDN is effective.
Almost all mails from IP based dynamic FQDN are SPAM.
However there are few important exceptions:
we have needs to send mails to users of our smtp host from somewhere
using DHCP.
Plan 9 smtp server supports SMTP-AUTH so that legitimate users are
allowed to transfer their mails to other smtp server.
We can also send mails to users of our smtp host using SMTP-AUTH.
However the information(the fact the mail is authenticated) is
discarded in delivering mails to mbox. Therefore these mails are
confused with SPAM.
I think it is worthwhile to put a tag something like:
X-Authenticated-User: alice
following "Received: from ..."
in case that the mail is authenticated by alice.
Kenji Arisawa
next prev parent reply other threads:[~2007-10-27 2:51 UTC|newest]
Thread overview: 50+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-10-26 22:38 [9fans] grap retarded?? Pietro Gagliardi
2007-10-26 23:17 ` geoff
2007-10-26 23:22 ` Pietro Gagliardi
2007-10-27 2:51 ` arisawa [this message]
2007-10-27 3:16 ` [9fans] detecting spam Pietro Gagliardi
2007-10-27 4:38 ` [9fans] security erik quanstrom
2007-10-27 9:03 ` roger peppe
2007-10-27 10:04 ` arisawa
2007-10-27 12:48 ` Uriel
2007-10-27 14:54 ` erik quanstrom
2007-10-27 17:19 ` Tim Newsham
2007-10-27 19:18 ` erik quanstrom
2007-10-27 22:20 ` don bailey
2007-10-27 22:25 ` Pietro Gagliardi
2007-10-27 22:33 ` don bailey
2007-10-28 0:17 ` David Leimbach
2007-10-28 6:00 ` Skip Tavakkolian
2007-10-28 6:06 ` john
2007-10-28 8:32 ` Joel C. Salomon
2007-10-28 20:53 ` Charles Forsyth
2007-10-27 23:40 ` Skip Tavakkolian
2007-10-28 6:11 ` don bailey
2007-10-28 6:30 ` Skip Tavakkolian
2007-10-28 6:42 ` don bailey
2007-10-28 7:28 ` Skip Tavakkolian
2007-10-28 12:53 ` Pietro Gagliardi
2007-10-28 15:52 ` don bailey
2007-10-28 15:51 ` don bailey
2007-10-28 15:59 ` Iruata Souza
2007-10-28 16:30 ` don bailey
2007-10-28 17:14 ` Iruata Souza
2007-10-28 17:22 ` Gabriel Diaz
2007-10-28 17:44 ` Pietro Gagliardi
2007-10-28 20:37 ` Charles Forsyth
2007-10-28 16:10 ` erik quanstrom
2007-10-28 16:26 ` don bailey
2007-10-28 18:30 ` Skip Tavakkolian
2007-10-28 18:43 ` Uriel
2007-10-28 18:58 ` Iruata Souza
2007-10-28 22:48 ` arisawa
2007-10-28 23:29 ` Pietro Gagliardi
2007-10-29 2:30 ` Skip Tavakkolian
2007-10-27 9:00 ` [9fans] detecting spam roger peppe
2007-10-27 13:16 ` Pietro Gagliardi
2007-10-27 13:41 ` erik quanstrom
2007-10-27 13:43 ` Pietro Gagliardi
2007-10-27 14:04 ` Martin Neubauer
2007-10-29 10:10 ` [9fans] grap retarded?? Douglas A. Gwyn
2007-10-29 18:43 ` Pietro Gagliardi
2007-10-29 10:10 ` Douglas A. Gwyn
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