On Thu, Mar 24, 2011 at 10:34 AM, Victor Duchovni <victor.ducho...@morganstanley.com> wrote: > If all you changed was adding a local DNS cache, unless your previous > cache was >100ms away, you'll not see much change.
Actually, after doing some tests with dig on our colo provider's DNS servers we noticed that they were taking an avg of 200+ msec for a reply, and sometimes over 400! We had no idea it was that bad. Again, we're not sure if this change will have any impact on Postfix's delivery times yet, but it's fun to try and optimize. :) > To get better > treatment from remote systems, get whitelisted by the domains that > represent the largest communities of users. Agreed - which we've already done.
