On 11/29/12 10:44:54, John Hardin wrote: > You will probably want to put a little effort into maintaining lists > of regular correspondents who can bypass greylisting. There may be > tools to automate that, e.g. to whitelist someone a local user has > sent mail to.
Has anyone looked into the use of a DNS-based white listing service? For example: http://www.dnswl.org/ It might be interesting to make a pass over a grey list database and see if the sites white listed there appear in the registry. And that sites that were black listed or simply did not retry are _not_ listed in the white list.
