nanog mailing list archives
Re: Reverse DNS RFCs and Recommendations
From: Matthias Leisi <matthias () leisi net>
Date: Wed, 30 Oct 2013 22:45:58 +0100
On Wed, Oct 30, 2013 at 8:22 PM, William Herrin <bill () herrin us> wrote:
Which finally brings me to my questions: It seems like the unspoken de facto that mail admins appreciate given the IP 203.0.113.15 is "203-0-113-15.[type].[static/dynamic].yourdomain.tld". This seems perfectly acceptable, it's short, detailed and to the point. Is there really anything bad about this?reputation services. They use this information when classifying the source and grouping sources into netblocks. If you take the time to distinguish your intended mail servers from your dialup address pool they'll try not to include your mail server when they ban mail directly from your dialup address pool.
At dnswl.org, we identify new servers from looking at the rDNS in what we see is being queried through our logs. Names with "dynamic", "dialup" etc or that look like they have an embedded IPv4 address are discarded through that channel. -- Matthias
Current thread:
- Re: Reverse DNS RFCs and Recommendations, (continued)
- Re: Reverse DNS RFCs and Recommendations John Miller (Oct 30)
- Re: Reverse DNS RFCs and Recommendations William Herrin (Oct 30)
- Re: Reverse DNS RFCs and Recommendations Andrew Sullivan (Oct 30)
- RE: Reverse DNS RFCs and Recommendations Nolan Rollo (Oct 30)
- Re: Reverse DNS RFCs and Recommendations Joe Abley (Oct 30)
- Re: Reverse DNS RFCs and Recommendations Scott Howard (Oct 30)
- Re: Reverse DNS RFCs and Recommendations Mark Andrews (Oct 30)
- Re: Reverse DNS RFCs and Recommendations William Herrin (Oct 30)
- Re: Reverse DNS RFCs and Recommendations Valdis . Kletnieks (Oct 30)
- Re: Reverse DNS RFCs and Recommendations Barry Shein (Oct 30)
- Re: Reverse DNS RFCs and Recommendations Matthias Leisi (Oct 30)
- Re: Reverse DNS RFCs and Recommendations John Levine (Oct 31)
- RE: Reverse DNS RFCs and Recommendations Tony Hain (Oct 31)
- Re: Reverse DNS RFCs and Recommendations John Levine (Oct 31)
- Re: Reverse DNS RFCs and Recommendations Scott Howard (Oct 31)