[leafnode-list] Filtering crossposts to gmane.spam.detected

[Reiner Steib <4.uce.03.r.s@xxxxxxxxxxxxxx>]

Hi,

on gmane.discuss [1], we were discussing the best way to filter Spam
using leafnode's filter file.

Background:

On Gmane, all Spam articles, detected either by SpamAssasin or
reported (and confirmed) by humans, is crossposted to
`gmane.spam.detected' [2].  So filtering crossposts to
`gmane.spam.detected' is very useful for Modem users.

On the server news.gmane.org, "Xref:" is returned by XOVER,
"Newsgroups:" isn't:

--8<---------------cut here---------------start------------->8---
$ telnet news.gmane.org nntp
Trying 80.91.224.249...
Connected to news.gmane.org.
Escape character is '^]'.
200 main.gmane.org InterNetNews NNRP server INN 2.3.2 ready (posting ok).
group gmane.emacs.bbdb.user
211 1128 1 1128 gmane.emacs.bbdb.user
xover 1120-1128
224 1120-1128 fields follow
[...]
1127    [...]Xref: [...] gmane.emacs.bbdb.user:1127 gmane.spam.detected:90510
1128    [...]Xref: main.gmane.org gmane.emacs.bbdb.user:1128
--8<---------------cut here---------------end--------------->8---

My question is: Does leafnode (2.0.x) take advantage of XOVER for
filtering?  Which filter criteria is the most efficient in this case.

(1)
pattern = ^Xref:.* gmane\.spam\.detected:
action = kill

(2)
pattern = ^Newsgroups:.*[, ]gmane\.spam\.detected$
action = kill
pattern = ^Newsgroups:.*[, ]gmane\.spam\.detected,
action = kill

(3) other (better) suggestions?

Bye, Reiner.

[1] http://news.gmane.org/thread.php?group=gmane.discuss

[2] http://gmane.org/filter.php
-- 
       ,,,
      (o o)
---ooO-(_)-Ooo--- PGP key available via WWW   http://rsteib.home.pages.de/

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