nanog mailing list archives
Re: trapdoor.merit.edu and other impatient Postfix mailers everywhere (fwd)
From: "Wojtek Zlobicki" <wojtekz () idirect com>
Date: Fri, 3 Aug 2001 08:25:45 -0400
Remember in your analysis that NSI's whois is *notoriously* inaccurate, and quite often the "owner of record" of a /16 is a service provider, and the person you WANT to send the mail to is the admin of the company that bought a /22 from that provider's /16. Hint: You ever had a hack-in attempt at your site, and tried to figure out who owned the IP address? How long did it take you? Have you ever come up empty-handed? Good - now design a way to do that look-up several hundred times *a second*. But yeah, with a little bit of hand-waving, they could get the mail to the right admin at the right company.
This isn't NSI's fault !!! Every ISP that I have worked for that assigned a block of 8 or more IPs properly swipped their IPs with ARIN. If people get lazy and just swip(spelling ?) a /16 instead of individual blocks, ARIN cannot be blamed. Even the IP's for the /25 that I am on on my cable modem at home are properly swipped to reflect the geographic region as well as my MSO.
Current thread:
- Re: trapdoor.merit.edu and other impatient Postfix mailers everywhere (fwd), (continued)
- RE: trapdoor.merit.edu and other impatient Postfix mailers everywhere (fwd) John A. Tamplin (Aug 02)
- RE: trapdoor.merit.edu and other impatient Postfix mailers everywhere (fwd) Mitch Halmu (Aug 02)
- RE: trapdoor.merit.edu and other impatient Postfix mailers everywhere (fwd) Steven J. Sobol (Aug 03)
- RE: trapdoor.merit.edu and other impatient Postfix mailers everywhere (fwd) Derek Balling (Aug 03)
- RE: trapdoor.merit.edu and other impatient Postfix mailers everywhere (fwd) David Schwartz (Aug 03)
- RE: trapdoor.merit.edu and other impatient Postfix mailers everywhere Larry Sheldon (Aug 03)
- Re: trapdoor.merit.edu and other impatient Postfix mailers everywhere (fwd) Wojtek Zlobicki (Aug 03)
- Re: trapdoor.merit.edu and other impatient Postfix mailers everywhere (fwd) Mitch Halmu (Aug 03)
- Re: trapdoor.merit.edu and other impatient Postfix mailers everywhere (fwd) Mitch Halmu (Aug 03)