nanog mailing list archives
Re: Arrogant RBL list maintainers
From: Michael Holstein <michael.holstein () csuohio edu>
Date: Wed, 09 Dec 2009 15:53:10 -0500
All of the DNSBLs I know are about outbound mail hosts, not inbound ones. What are your sending hosts called?
Outbound goes through the same 4 boxes. We used to split it up (2 at MX10, 2 at MX20 .. reversed for outbound) but for capital (licensing/hardware) reasons we decided to do in/out through the same system. This is just "first touch" on the way in and "last touch" on the way out. We also have spfv1 records defined (albeit a rather permissive "ptr ~all") .. but as I mentioned, the firewall disallows smtp to anywhere but appropriate hosts. We do still allow smtps and submission to accommodate folks that travel, as we haven't (yet) had a problem with bots using either of those services. My beef with Trend was that they were in essence telling us to re-do DNS on our /16 because they didn't like the way we did it .. despite the mail part (the one that matters) being technically correct by most everyone else's standards. Personally, I think this is just so they can have a "big list" when they sell it (.. our DNSBL has $x million more entries than $competitor..). Cheers, Michael Holstein Cleveland State University
Current thread:
- Re: Arrogant RBL list maintainers, (continued)
- Re: Arrogant RBL list maintainers Steven Champeon (Dec 10)
- Re: Arrogant RBL list maintainers Michael Holstein (Dec 10)
- RE: Arrogant RBL list maintainers Frank Bulk (Dec 09)
- Re: Arrogant RBL list maintainers Chris Edwards (Dec 10)
- Re: Arrogant RBL list maintainers Tony Finch (Dec 10)
- Re: Arrogant RBL list maintainers Ronald Cotoni (Dec 10)
- Re: Arrogant RBL list maintainers Michelle Sullivan (Dec 16)
- Re: Arrogant RBL list maintainers Niels Bakker (Dec 16)
- Re: Arrogant RBL list maintainers Michelle Sullivan (Dec 16)
- Re: Arrogant RBL list maintainers John Levine (Dec 09)
- Re: Arrogant RBL list maintainers Michael Holstein (Dec 09)
- RE: Arrogant RBL list maintainers Frank Bulk (Dec 09)
- RE: Arrogant RBL list maintainers Mikael Abrahamsson (Dec 09)
- RE: Arrogant RBL list maintainers Sam Hayes Merritt, III (Dec 10)
- Re: Arrogant RBL list maintainers Dave CROCKER (Dec 10)
- Re: Arrogant RBL list maintainers Steven Champeon (Dec 10)
- Re: Arrogant RBL list maintainers Sven Olaf Kamphuis (Dec 10)
- Re: Arrogant RBL list maintainers Raymond Dijkxhoorn (Dec 10)
- Re: Arrogant RBL list maintainers Sven Olaf Kamphuis (Dec 10)
- Re: Arrogant RBL list maintainers Raymond Dijkxhoorn (Dec 10)
- Re: Arrogant RBL list maintainers John Levine (Dec 10)