nanog mailing list archives
Re: REVERSE DNS Practices.
From: Steven Champeon <schampeo () hesketh com>
Date: Thu, 26 Mar 2009 12:56:58 -0400
on Thu, Mar 26, 2009 at 08:44:57PM +1100, Martin Barry wrote:
$quoted_author = "Steven Champeon" ;adsl.internode.on.net gaw.internode.on.net padsl.internode.on.net adsl.adelaide.on.net link.internode.on.net as0.adl2.internode.on.net lns1.adl2.internode.on.net...and so on and so on. You do realise that they were all infrastructure devices which would never send email? LNS isn't a big enough giveaway?
You do realize that we've seen mail from all of these, which is why they're even on our radar, right? PaDSL is a VPN service. ADSL is a pretty straightforward label. 'link'? Who knows? If you don't take the time to think about your labeling and tokens, don't be surprised if other people not privy to your internal naming scheme start guessing. Especially if they're spewing spam and viruses like a firehose.
Oh, there's also 'static.internode.on.net', so the safe bet is to assume that ALL of the rest are dynamic. Correct bet? Who knows.That's a safe assumption.
Unfortunately, it's not. Even more unfortunately, we see more junk from their generic statics than we do from their obvious dynamics. -- hesketh.com/inc. v: +1(919)834-2552 f: +1(919)834-2553 w: http://hesketh.com/ antispam news, solutions for sendmail, exim, postfix: http://enemieslist.com/
Current thread:
- Re: REVERSE DNS Practices., (continued)
- Re: REVERSE DNS Practices. Luke S Crawford (Mar 28)
- Re: REVERSE DNS Practices. William Pitcock (Mar 28)
- RE: REVERSE DNS Practices. Frank Bulk (Mar 21)
- Re: REVERSE DNS Practices. Steven Champeon (Mar 23)
- Re: REVERSE DNS Practices. Mark Tinka (Mar 21)
- Re: REVERSE DNS Practices. Matthew F. Ringel (Mar 24)
- Re: REVERSE DNS Practices. William Allen Simpson (Mar 24)
- Re: REVERSE DNS Practices. Tom Wright (Mar 25)
- Re: REVERSE DNS Practices. Steven Champeon (Mar 25)
- Re: REVERSE DNS Practices. Martin Barry (Mar 26)
- Re: REVERSE DNS Practices. Steven Champeon (Mar 26)
- Re: REVERSE DNS Practices. Adrian Chadd (Mar 26)
- Re: REVERSE DNS Practices. Steven Champeon (Mar 26)
- Re: REVERSE DNS Practices. Tom Wright (Mar 26)
- Re: REVERSE DNS Practices. Steven Champeon (Mar 26)
- Re: REVERSE DNS Practices. Steven Champeon (Mar 27)