How Spam Filtering Works: From SPF to DKIM to Blacklists
I&#x27;ve been thinking for a while that there should be a movement to allow people running mailservers at their home again.<p>&quot;Again&quot; as in get other actors in the field to allow&#x2F;ease that: spamlist managers should stop blocking residential address <i>by default</i> and make it easier to appeal. ISPs should make it possible and easy to get a reverse-ptr with every fixed ipv4 allocation.<p>In this monitoring age I want to be able to handle my private conversations (and my data) on my own iron (running somewhere in my house).<p>All this impediments to running your own mailserver and take back  control of your own data really look like a push towards state-&#x2F;corporate-backed espionage of individuals.<p>It&#x27;s not 1995 anymore, most of us have an internet connection well capable of sustain enough mailboxes for a whole family.