Date: Thu, 14 Feb 2002 17:12:04 -0500 (EST) From: Igor Roshchin <str@giganda.komkon.org> To: graham@infotechcanada.com Cc: security@freebsd.org Subject: Re: sendmail ; bogus letters Message-ID: <200202142212.g1EMC4p25832@giganda.komkon.org> In-Reply-To: <02021413401002.02159@hercules.avint.net>
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> From owner-freebsd-security@FreeBSD.ORG Thu Feb 14 10:57:40 2002 > From: Graham Rose <graham@avint.net> > To: freebsd-security@FreeBSD.ORG > Subject: Re: sendmail ; bogus letters > Date: Thu, 14 Feb 2002 13:35:16 -0330 > > Add entries for the Open Relay Database (www.ordb.org & > www.ordb.org/faq/#sendmail) and spamcop.net (www.spamcop.net) > Configuring your mail server to use these lists of known spammers will block > most spam. I've noticed a 10 fold decrease on my mail server, with thousands of > spam blocked each day. > Note: Setup instructions vary depending on the version of sendmail you run. See > above urls for details. > Personally, I would advise to use spamcop with great _caution_! Apparently, according to them, they do not do any checking on the addresses submitted. With all great intentions, I believe, that defeats the purpose. See responses from spamcop.net below. Igor > From appeals@spamcop.net Sat Dec 1 14:43:20 2001 > Date: Sat, 1 Dec 2001 14:43:01 -0500 (EST) > From: SpamCop Deputy <appeals@spamcop.net> > To: str@giganda.komkon.org > Subject: Re: You have erroneous listings in your DB > > There is no review at all. SpamCop is a totally automatic system that handles some 70,000 complaints a day. > > - Don - > > > - Original Email - > Dear Merin, > > Thank you for your quick response. > > Could you please clarify one question: > When the complaints are filed, what type of checking is done > (besides probably relay tests) ? > > If no checking is done, how can one be sure it was a spam, > and not a legitimate message, or even a message made up as a revenge, > or simply a message reported as a SPAM by a mistake ? > > If I forwarded, say your message, to the spam reporting address @spamcop.net, > would it be filed and spamcop.net be listed as a spam source ? :-) > (Well I assume, all *.spamcop.net hosts would be automatically unlisted in > this case :) ) > > Regards, > > > Igor Roshchin > System Administrator > KomKon Sites > > > > From appeals@spamcop.net Thu Nov 29 17:02:51 2001 > > Date: Thu, 29 Nov 2001 17:02:50 -0500 (EST) > > From: SpamCop Deputy <appeals@spamcop.net> > > To: str@giganda.komkon.org > > Subject: Re: You have erroneous listings in your DB > > > > IP addresses are added to the blacklist when complaints are filed. Obviously, this is a very draconian and heavy handed means of blocking email, so it is not right for everyone. We appreciate your comments and perhaps someday the filtering system will be more refined and to your liking. > > > > Merin, SpamCop deputy > > > > - Original Email - > > > > Hello! > > > > First of all, note, that I am not associated with any Genuity Inc. > > > > We were very glad to see a service provided by SpamCops, > > with very good intentions from your side, and rather good database of > > spam relays and sources. > > We tried to use BL.spamcop.net but were very disappointed > > by the number of erroneous results. > > > > A good example is > > http://spamcop.net/w3m?action=checkblock&ip=4.2.130.16 > > > > > > All what you have on file is responses to the e-mails > > sent abuse@genuity.net (or other abuse@ other Genuity's addresses). > > > > It is not SPAM, and this makes one wonder what logic is used > > by you to include there as a SPAM without proper checking being done. > > > > There are more of similar "wrongful" inclusions, but that's not the point. > > There is some fault in the logic of inclusion mechanism. > > > > We may reconsider our decision in the future, if we see more proper > > checking of SpamCops before inclusion in the database, > > but at this moment we decided not to use your service. > > > > Best regards, > > > > > > Igor Roshchin > > System Administrator > > KomKon Sites > > > > > To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-security" in the body of the message
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