nanog mailing list archives
Re: The End-To-End Internet (was Re: Blocking MX query)
From: Greg Ihnen <os10rules () gmail com>
Date: Wed, 5 Sep 2012 11:46:34 -0400
On Wed, Sep 5, 2012 at 11:11 AM, Izaac <izaac () setec org> wrote:
On Wed, Sep 05, 2012 at 07:50:12AM -0700, Henry Stryker wrote:Not only that, but a majority of spam I receive lately has a valid DKIM signature. They are adaptive, like cockroaches.This is why tcp port 25 filtering is totally effective and will remain so forever. Definitely worth breaking basic function principles of a global communications network over which trillions of dollars of commerce occur. -- . ___ ___ . . ___ . \ / |\ |\ \ . _\_ /__ |-\ |-\ \__
But as someone pointed out further back on this thread people who want to have their mail servers available to people who are on the other side of port 25 filtering just use the alternate ports. So then what does filtering port 25 accomplish? Greg
Current thread:
- The End-To-End Internet (was Re: Blocking MX query) Jay Ashworth (Sep 04)
- Re: The End-To-End Internet (was Re: Blocking MX query) Seth Mattinen (Sep 04)
- Re: The End-To-End Internet (was Re: Blocking MX query) Daniel Taylor (Sep 04)
- Re: The End-To-End Internet (was Re: Blocking MX query) Michael Thomas (Sep 04)
- Re: The End-To-End Internet (was Re: Blocking MX query) Daniel Taylor (Sep 05)
- Re: The End-To-End Internet (was Re: Blocking MX query) Henry Stryker (Sep 05)
- Re: The End-To-End Internet (was Re: Blocking MX query) Izaac (Sep 05)
- Re: The End-To-End Internet (was Re: Blocking MX query) Greg Ihnen (Sep 05)
- Re: The End-To-End Internet (was Re: Blocking MX query) Sean Harlow (Sep 05)
- Re: The End-To-End Internet (was Re: Blocking MX query) Izaac (Sep 05)
- Re: The End-To-End Internet (was Re: Blocking MX query) Cutler James R (Sep 05)
- Re: The End-To-End Internet (was Re: Blocking MX query) William Herrin (Sep 05)
- Re: The End-To-End Internet (was Re: Blocking MX query) Måns Nilsson (Sep 05)
- Re: The End-To-End Internet (was Re: Blocking MX query) Michael Thomas (Sep 04)
- Re: The End-To-End Internet (was Re: Blocking MX query) Sean Harlow (Sep 05)
- Re: The End-To-End Internet (was Re: Blocking MX query) Michael Thomas (Sep 05)
- Re: The End-To-End Internet (was Re: Blocking MX query) Michael Thomas (Sep 05)
- Re: The End-To-End Internet (was Re: Blocking MX query) Henry Stryker (Sep 05)
- Re: The End-To-End Internet (was Re: Blocking MX query) John Levine (Sep 05)