Date: Fri, 20 Mar 1998 12:39:26 -0600 From: Karl Denninger <karl@mcs.net> To: Ollivier Robert <roberto@keltia.freenix.fr> Cc: chat@FreeBSD.ORG Subject: Re: Sendmail going commercial, and ? Message-ID: <19980320123926.03978@mcs.net> In-Reply-To: <19980320193025.A4717@keltia.freenix.fr>; from Ollivier Robert on Fri, Mar 20, 1998 at 07:30:25PM %2B0100 References: <006d01bd5422$4fba42b0$1f40e6cd@ichiban.ingress.com> <19980320193025.A4717@keltia.freenix.fr>
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On Fri, Mar 20, 1998 at 07:30:25PM +0100, Ollivier Robert wrote: > According to Yarema: > > use the RBL http://maps.vix.com/rbl/ but they both have to be patched to do > > so. Both are harder to configure against unauthorized relaying. And sendmail > > Well, that's not true for 8.8.8+Assman's rules and 8.9 (which by default > forbid relaying); use of the RBL is only > > FEATURE(rbl)dnl # 8.9.0 > > and > > define(`_MAPS_RBL_', 1)dnl # 8.8.8 + check.tar > > away. > > 8.9.0 has one very cool feature for hosts that are listed as MX for many > domains: if you use the following, you'll authorize relay from all every > domain you're MX for: > > FEATURE(relay_based_on_MX) > > One site I'm administrator for has a lot of UUCP connected machines and the > above feature makes very easy to accept mail for all the various domains > our users have without having to list every one of them... That's dangerous. How long will it take the spammers to figure this one out and start listing MX records? -- -- Karl Denninger (karl@MCS.Net)| MCSNet - Serving Chicagoland and Wisconsin http://www.mcs.net/ | T1's from $600 monthly / All Lines K56Flex/DOV | NEW! Corporate ISDN Prices dropped by up to 50%! Voice: [+1 312 803-MCS1 x219]| EXCLUSIVE NEW FEATURE ON ALL PERSONAL ACCOUNTS Fax: [+1 312 803-4929] | *SPAMBLOCK* Technology now included at no cost To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-chat" in the body of the message
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