From owner-freebsd-security Sat Dec 28 14: 0:59 2002 Delivered-To: freebsd-security@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 190AC37B401; Sat, 28 Dec 2002 14:00:53 -0800 (PST) Received: from localhost.neotext.ca (h24-70-64-200.ed.shawcable.net [24.70.64.200]) by mx1.FreeBSD.org (Postfix) with ESMTP id 3D1E143EA9; Sat, 28 Dec 2002 14:00:52 -0800 (PST) (envelope-from campbell@localhost.neotext.ca) Received: from localhost.neotext.ca (localhost.neotext.ca [127.0.0.1]) by localhost.neotext.ca (8.12.6/8.12.5) with ESMTP id gBSM23iL012441; Sat, 28 Dec 2002 15:02:04 -0700 (MST) (envelope-from campbell@localhost.neotext.ca) Received: (from campbell@localhost) by localhost.neotext.ca (8.12.6/8.12.5/Submit) id gBSM23qL012440; Sat, 28 Dec 2002 15:02:03 -0700 (MST) Date: Sat, 28 Dec 2002 15:02:03 -0700 From: Duncan Patton a Campbell To: Shawn Duffy Cc: chris@manual-override.net, freebsd-questions@FreeBSD.ORG, security@FreeBSD.ORG Subject: Re: Bystander shot by a spam filter. Message-Id: <20021228150203.3c3da308.campbell@neotext.ca> In-Reply-To: <1041112853.3577.56.camel@pitbull> References: <20021228134931.373541d9.campbell@neotext.ca> <20021228164035.J58458-100000@manual-override.net> <20021228145101.19f61ce1.campbell@neotext.ca> <1041112853.3577.56.camel@pitbull> Organization: Index Express Ltd. X-Mailer: Sylpheed version 0.8.6 (GTK+ 1.2.10; i386-unknown-freebsd4.7) Mime-Version: 1.0 Content-Type: multipart/signed; protocol="application/pgp-signature"; micalg="pgp-sha1"; boundary="=.w0qzal3rVsGajX" Sender: owner-freebsd-security@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.org --=.w0qzal3rVsGajX Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit No. The automated systems to filtre spam and virii better be *really* careful about what they block. If you block or subvert discrete communications between humans then you are asking for real trouble. That's all. Dhu On 28 Dec 2002 17:00:54 -0500 Shawn Duffy wrote: > So we should let the govt open all unopened mail to make sure nothing is > illegal in it? and then leave it up to them to determine if it was > intentional? > > please... > > On Sat, 2002-12-28 at 16:51, Duncan Patton a Campbell wrote: > > The law would have to consider intention of the sender: > > > > Virii are (generally) not intended by the sender, except > > for the original author. If I didn't intend to send the > > virus, there is no constraint on you scanning and chopping > > it. As for porn, if you are a minor, then by sending it > > to you I have probably committed a criminal offense, regardless > > of the vehicle employed. > > > > Dhu > > > > > > On Sat, 28 Dec 2002 16:41:46 -0500 (EST) > > Chris Orr wrote: > > > > > So theoretically scanning email attatchments for viruses is illeagal too? > > > and the same goes for filtering out porn? > > > -chris > > > > > > On Sat, 28 Dec 2002, Duncan Patton a Campbell wrote: > > > > > > > Seems to me that this is an invitation to government > > > > regulation -- interfering with the mail is a criminal > > > > offense for good reason. > > > > > > > > Dhu > > > > > > > > On 28 Dec 2002 15:46:10 -0500 > > > > Shawn Duffy wrote: > > > > > > > > > The lists are usually kept on the websites of whatever particular > > > > > organizations are doing it... they are quite a few... > > > > > As far as suing them, I would venture to say no... If you dont want > > > > > someone to be able to connect to your mail server that is certainly > > > > > within your right to do... and if other people want to agree with you, > > > > > well then, what can you do... although I am sure someone somewhere will > > > > > probably sue over it and win... > > > > > > > > > > shawn > > > > > > > > > > > > > > > On Sat, 2002-12-28 at 15:32, Duncan Patton a Campbell wrote: > > > > > > How do you find if you are on the list? And who has the list? > > > > > > > > > > > > Can they be sued? > > > > > > > > > > > > Thanks, > > > > > > > > > > > > Duncan (Dhu) Campbell > > > > > > > > > > > > On Sat, 28 Dec 2002 08:45:23 -0500 > > > > > > Harry Tabak wrote: > > > > > > > > > > > > > [This is a resend. Ironically, the orignal was blocked by FreeBSD's spam > > > > > > > filter, I've had to send this from another account] > > > > > > > > > > > > > > I am not sure which list is best for this issue, hence the cross > > > > > > > posting. I believe spam and anti-spam measures are security issues -- > > > > > > > the 'Availability' part of C-I-A. I apologize if I am wrong. A FreeBSD > > > > > > > ported package is contributing to an internet service availability > > > > > > > problem that has me stumped. I believe that an unknowable quantity of > > > > > > > other internet denizens are also affected. > > > > > > > > > > > > > > I'm a long time fan of FreeBSD -- I run it on my small mail server and > > > > > > > I've recommended it for many applications. I even bought a CD once. I > > > > > > > write this missive with great reluctance. I've worked with a lot of > > > > > > > strange software over the years, But this is a new first -- Software > > > > > > > that slanders! Software that publicly called me a spammer!!! And not to > > > > > > > my face, but to business associate. And then took action. > > > > > > > > > > > > > > I recently discovered, and quite by accident, that a FreeBSD ported > > > > > > > package -- spambnc (aka Spambouncer or SB) -- was blocking mail from me > > > > > > > to an unknown number of businesses and individuals on the internet. I'll > > > > > > > probably never have to correspond with most of these people, but I'm a > > > > > > > freelancer -- this may have already cost me a job. [Dear reader, don't > > > > > > > be surprised if you or your clients are also blocked. I strongly suggest > > > > > > > that you check it out.] > > > > > > > > > > > > > > Anti-spam products have a valuable place in the security arsenal. But, > > > > > > > IMHO, this product is dangerous because it includes filters and rules > > > > > > > that are overreaching, and inaccurate. Bad firewall rules and bad > > > > > > > anti-spam rules may be OK for an individual site. However, spambnc's > > > > > > > bad advice is being mass marketed through the good offices of FreeBSD, > > > > > > > and it is putting potholes in the net for the rest of us. Until it is > > > > > > > fixed, and proven harmless, FreeBSD should stop distributing this product. > > > > > > > > > > > > > > Basically, the default built-in policies for blocking mail aren't fully > > > > > > > described, and there is no mechanism to universally correct the > > > > > > > inevitable mistakes in a timely manner. Users (people who install this > > > > > > > product) are mislead about the probably of filtering the wrong mail. I > > > > > > > am sure that the software was developed with the very best intentions, > > > > > > > but in its zeal to block lots and lots of spam, SB is hurting good people. > > > > > > > > > > > > > > The SB rule blocking my mail host has nothing to do with me. Even > > > > > > > though, it can use dynamic anti-spam DNS services, SB hard codes its > > > > > > > rules for filtering bad domains by name and by IP address. My nemisis is > > > > > > > buried in a 1476 line file, sb-blockdomains.rc, which installs by > > > > > > > default, and is not documented outside the code. Along with others, it > > > > > > > blocks the entire 66.45.0.0/17 space because spammers might live there. > > > > > > > This is sort of like a corporate mail room throwing away all NJ > > > > > > > postmarked mail because of the bulk mail distribution centers in Secaucus. > > > > > > > > > > > > > > My mail host address gets a clean bill of health from every anti-spam > > > > > > > site that I can find, such as SPEWS. I've checked at least 30 of them. > > > > > > > > > > > > > > My tiny x/29 block is sub-allocated from my DSL provider's x/23 block. > > > > > > > The DSL provider's block is a sub-allocation from Inflow.com's > > > > > > > 66.45.0.0/17 block. Spambouncer doesn't like Inflow. While they have a > > > > > > > right to their opinions, they don't have a right to publicly tar me > > > > > > > because of my neighbors. > > > > > > > > > > > > > > If I read sb-blockdomains # comments correctly, it is policy to not > > > > > > > only block known spammers, but to ALSO block entire networks based on > > > > > > > their handling of spam complaints. This is like as a business > > > > > > > receptionist checking callerID and then ignoring incoming calls from > > > > > > > Verizon subscribers because Verizon tolerates (and probably invented) > > > > > > > telemarketing. > > > > > > > > > > > > > > I have written to both the Spambouncer contact address > > > > > > > and the FreeBSD maintainer, but without a > > > > > > > response. Possibly they are on holiday, or spambouncer is eating my > > > > > > > mail. Perhaps I'm just too impatient. > > > > > > > > > > > > > > I have also contacted my ISP's support. They don't know how to help > > > > > > > me. They vouch for Inflow. They don't recommend it, but for a fee, my > > > > > > > service could be switched to a different PVC, and I'd get an address > > > > > > > from a different carrier. But of course, the new address could be > > > > > > > black-listed on a whim. > > > > > > > > > > > > > > Regardless, I assume that these are reasonable people, and that they > > > > > > > will oil the squeaky wheel as soon as it is convenient. But how will I > > > > > > > ever know that EVERY copy of spambouncer has been fixed? What about > > > > > > > other innocent ISP subscribers who are also black-listed? > > > > > > > > > > > > > > Harry Tabak > > > > > > > QUAD TELECOM, INC. > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > To Unsubscribe: send mail to majordomo@FreeBSD.org > > > > > > > with "unsubscribe freebsd-security" in the body of the message > > > > > -- > > > > > email: pakkit at codepiranha dot org > > > > > web: http://codepiranha.org/~pakkit > > > > > pgp: 8988 6FB6 3CFE FE6D 548E 98FB CCE9 6CA9 98FC 665A > > > > > having problems reading email from me? http://codepiranha.org/~pakkit/pgp-trouble.html > > > > > > > > > > > > > -- > email: pakkit at codepiranha dot org > web: http://codepiranha.org/~pakkit > pgp: 8988 6FB6 3CFE FE6D 548E 98FB CCE9 6CA9 98FC 665A > having problems reading email from me? http://codepiranha.org/~pakkit/pgp-trouble.html > --=.w0qzal3rVsGajX Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.0.7 (FreeBSD) iD8DBQE+Dh9bXgQtJ7uBra8RAmNvAKCBCTdrzVVEwS22nrtpLxGIGaLDCgCeJQaM 0TomniQHO9SHFRNCqcpBbYM= =/1CX -----END PGP SIGNATURE----- --=.w0qzal3rVsGajX-- To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-security" in the body of the message