blacklist(s)

[Matthew Seaman]

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 at infracaninophile.co.uk>, relay=c-67-162-153-95.client.comcast.net [67.162.153.95], reject=550 5.7.1 <m.seaman at 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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