Date: Sun, 20 Jun 2004 14:52:53 +0100 From: Matthew Seaman <m.seaman@infracaninophile.co.uk> To: David Fleck <david.fleck@mchsi.com> Cc: FreeBSD Mailing List <freebsd-questions@freebsd.org> Subject: Re: blacklist(s) Message-ID: <20040620135253.GA51201@happy-idiot-talk.infracaninophile.co.uk> In-Reply-To: <20040620081624.E13853@grond.sourballs.org> References: <20040515005503.GA9224@tao.thought.org> <20040514192819.C20346@wonkity.com> <20040620081624.E13853@grond.sourballs.org>
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On Sun, Jun 20, 2004 at 08:24:16AM -0500, David Fleck wrote:
> On Fri, 14 May 2004, Warren Block wrote:
> > On Fri, 14 May 2004, Gary Kline wrote:
> > > Can anyone point me to the website that told how to set up
> > > sendmail's FEATURE to use blacklists? There were at least
> > > fourr blacklist sites. I've grep'd thru my ~/Mail directory,
> > > can't find it?
> >
> > There should already be an example in /etc/mail/freebsd.mc (no
> > linewrap):
> >
> > dnl FEATURE(dnsbl, `blackholes.mail-abuse.org', `"550 Mail from " $&{client_addr} " rejected, see http://mail-abuse.org/cgi-bin/lookup?" $&{client_addr}')
> [...]
>
> Sorry for this monumentally stupid-sounding question, but how do you tell
> if the dnsbl feature is *working* or not? I've got 2 set in my local .mc
> files:
>
> FEATURE(dnsbl, `bl.spamcop.net', `"550 Mail from " $&{client_addr} " rejected, see http://spamcop.net/bl.shtml?" $&{client_addr}')
> FEATURE(dnsbl,`combined.njabl.org',`Message from $&{client_addr} rejected - see http://njabl.org/lookup?$&{client_addr}')
>
> (and yes, I did 'make cf install' afterwards), but I don't see any
> indication of mail being rejected because of these in my maillog. I do
> see mail being rejected because of settings in /etc/mail/access.db. Do
> these work silently, or are they not working at all?
You'll see messages being rejected in your maillog -- like this:
Jun 20 12:41:17 happy-idiot-talk sm-mta[50011]: i5KBf8LW050011: ruleset=check_rcpt, arg1=<m.seaman@infracaninophile.co.uk>, relay=c-67-162-153-95.client.comcast.net [67.162.153.95], reject=550 5.7.1 <m.seaman@infracaninophile.co.uk>... Mail from 67.162.153.95 rejected using spamcop.net DNSBL. See http://spamcop.net/w3m?action=checkblock&ip=67.162.153.95
If you aren't seeing any rejects then either you haven't installed the
modified sendmail.cf and restarted sendmail properly:
# cd /etc/mail
# make
# make install
# make restart
or you simply haven't had any spam from blacklisted addresses.
Cheers,
Matthew
--
Dr Matthew J Seaman MA, D.Phil. 26 The Paddocks
Savill Way
PGP: http://www.infracaninophile.co.uk/pgpkey Marlow
Tel: +44 1628 476614 Bucks., SL7 1TH UK
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