On Wed, 21 Feb 2018 02:30:40 -0500 Rob McEwen <r...@invaluement.com> wrote:
> (a) it might not "scale" for high volume mail flows and DNSBLs who, > like invaluement, process dozens (or more) spams per second. We use HEAD requests to expand known URL-shorteners on a cluster that peaks around 60 msgs/s > (b) and this isn't going to suddenly become a feature inside of many > types of spam filtering hardware and software overnight... that could > even take years, It's been part of our practice for about a year now. Regards, Dianne.
