nanog mailing list archives
RE: ORBS (Re: Scanning)
From: Roeland Meyer <rmeyer () mhsc com>
Date: Sun, 27 May 2001 11:30:28 -0700
From: Derek Balling [mailto:dredd () megacity org] Sent: Sunday, May 27, 2001 11:20 AM At 11:10 AM -0700 5/27/01, Roeland Meyer wrote:> I'm not sure I understand this logic:1.) They test positive for orbs... so they ARE an open relay 2.) That system is using MAPS, which means that there issome subsetof systems the open relay itself rejects mail fromI somehow missed your logic here. A MAPS blocked system is,by definitionNOT an open-relay, since it IS MAPS-blocked. Yet, ORBS willlist it as anopen-relay. I agree, there is a disconnect here. Your second premis invalidates the first. This may be a semantic issue, pleaseexamine andclarify.I think this is all a phrasology thing.
I'm sorry. I hate hare-splitting too.
Assuming "a MAPS-blocked system" means a system that is listed/blocked by MAPS as a spam source. Then your statement makes no sense because in all likelihood, that host IS an open relay.
My bad. What I meant was a MAPS-blocked system as a subcriber to MAPS. Not a MAPS-known spam source.
Assuming "a MAPS-blocked system" means a system that is partaking of the MAPS lists to block inbound mail to it Then your statement further makes no sense, because any non-MAPS-listed host could (in theory) send mail to/through that system. If the system using MAPS is an open relay, then non-MAPS-listed hosts could quite happily/easily pump mail through that system regardless of whether or not it is using MAPS.
Not true, I'm assuming that MAPS isn't the only anti-spam measures being implemented.
I might point out that, since MAPS has been running for afew years, most ifnot all, the spammer sources are now listed.I think my personal evidence (that about 90-95% of my spam that is blocked is NOT from MAPS sources) does not seem to bear that out.
You bear out my assumptions that other methods, besides MAPS and ORBS, are being deployed as well. Feeding such data into MAPS would improve MAPS accuracy.
Current thread:
- RE: ORBS (Re: Scanning), (continued)
- RE: ORBS (Re: Scanning) Derek Balling (May 27)
- RE: ORBS (Re: Scanning) Mitch Halmu (May 28)
- Re: ORBS (Re: Scanning) mike (May 29)
- RE: ORBS (Re: Scanning) John Fraizer (May 27)
- Re: ORBS (Re: Scanning) Steve Sobol (May 28)
- RE: ORBS (Re: Scanning) E.B. Dreger (May 27)
- RE: ORBS (Re: Scanning) Derek Balling (May 27)
- RE: ORBS (Re: Scanning) Patrick W. Gilmore (May 27)
- RE: ORBS (Re: Scanning) Derek Balling (May 27)
- Re: ORBS (Re: Scanning) Steve Sobol (May 27)
- Re: ORBS (Re: Scanning) E.B. Dreger (May 27)
- RE: ORBS (Re: Scanning) Patrick W. Gilmore (May 27)
- VPN Solution (WAS: ORBS (Re: Scanning)) Patrick W. Gilmore (May 27)
- RE: VPN Solution (WAS: ORBS (Re: Scanning)) Jason Lewis (May 27)
- Re: VPN Solution (WAS: ORBS (Re: Scanning)) Jeremy T. Bouse (May 27)