I want to support a trustworthy Internet and, as a layman in this field, I realise that how this is supported varies greatly depending on the domain/web/mail host.

Now that I have learnt about terms such as DNSSEC, SPF, DKIM, DMARC, DANE and MTA-STS, I am trying to learn more about them in this forum.

Perhaps my layman’s view of these things will also help to make it easier for other laymen to get to grips with this topic.

So, dear experts, please forgive me for being a bit clumsy, but sometimes you only realise it after hearing or reading it ten times.