On Thu, Jul 21, 2016 at 9:21 AM, Lefteris Tsintjelis <le...@spes.gr> wrote:
> Would it be too much to ask for a single reverse DNS lookup client based > black/white listing in postscreen? > > ... > .gmail.com reject > .live.com reject > .postfix.org accept > ... > If you're looking into Postscreen whitelisting, you might consider including Postwhite in your solution: http://www.stevejenkins.com/blog/2015/11/postscreen-whitelisting-smtp-outbound-ip-addresses-large-webmail-providers/ It helps you whitelist trusted senders' known SMTP IP addresses based on their published SPF records. You can choose which mailers to whitelist and add easily your own. SteveJ
