Date: Fri, 03 Oct 2003 16:34:55 -0000 From: Warren Block <wblock@wonkity.com> To: Joseph Koenig <joe@jwebmedia.com> Cc: freebsd-questions@freebsd.org Subject: Re: FreeBSD & SPAM Message-ID: <20031003102238.I4801@wonkity.com> In-Reply-To: <BBA2F131.16806%joe@jwebmedia.com> References: <BBA2F131.16806%joe@jwebmedia.com>
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On Fri, 3 Oct 2003, Joseph Koenig wrote: > I know this is an issue that comes up a lot, but I wanted to get an opinion > from some people on the list. We, along with everyone else, have TONS of > SPAM hit our server. Unfortunately, we haven't found any good way to reduce > it. We're using ORDB and SpamCop, but neither are really doing the job. These have been very effective for me: sbl.spamhaus.org list.dsbl.org blackholes.easynet.nl dynablock.easynet.nl dnsbl.sorbs.net Naturally, you should check the web pages for each before using them to make sure you understand their listing policies. Commercial DNSBL... no experience there. Some are quite conservative, and some are toothless. The free ones seem better to me. In combination with DNSBL, I have a large /etc/mail/access file of rejects. Bad ISPs, rogue providers, and even much of some countries. Bandwidth-wise, it's hard to beat--mail from known-bad origins is rejected outright. The Windows virus-of-the-week attacks have become so common that I've also written a little script to add those by /24. I'll manually "expire" them by removing that section from the access file, whenever it seems like it's rejecting real mail. Actually, I haven't seen that yet. -Warren Block * Rapid City, South Dakota USA
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