Hacker News Reader

Also mxmap.nl and mxmap.be and there is Norvegian map at kommune-epost-norge.netlify.app

I remember seing the Swedish map as well but can't find it now.

Wow, I knew it was true but this may really drives home just how much the netherlands is a microsoft shop.

Bert Hubert wrote about it at length since a few years already https://berthub.eu/articles/

The Swedish one was linked on the Belgian map: https://swedish-mail-dependency.netlify.app/