Authenticated origin pull: Guarantee all requests for your origin server originate within the Cloudflare community. Now, admittedly we're going to be a bit partial below, because at Postmark we do run a super-trustworthy email platform which you can use to deliver email through SMTP. PS: for those who’re considering Discovering https://bookmarkproduct.com/story16998978/not-known-facts-about-setup-dmarc-google-workspace