Why Mozilla’s DNS over HTTPS proposal is a bad idea
A couple of months ago, Mozilla posted A cartoon intro to DNS over HTTPS, which outlines their plans to enable support routing DNS queries over a secure connection. Initially this…
Checking SPF on incoming mail with Postfix
Something I've been wanting to add to my mail server for a while is Sender Policy Framework (SPF) checking on incoming mail. For anyone who isn't familiar with SPF, it…
LetsEncrypt DNS challenges with djbdns
Over the past few months I've been gradually rolling out TLS to the various domains and services that I run for myself and clients using the free certificate service LetsEncrypt.…