Mastodawn

Where does your commune host email? I did an analysis via DNS records and plotted it on a map:

This is an early version, looking for feedback 👀

MXmap — Email Sovereignty of Swiss Municipalities

Interactive map showing where Swiss municipalities host their official email. DNS analysis of all ~2,100 municipalities, color-coded by provider.

MXmap

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پویان Pouyan Mar 8

@davidhuser very nice! I also had something similar in mind but never came to realize it. Only implemented the golang modules but never did the measurements.

Well done!

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پویان Pouyan Mar 8

@davidhuser two questions:

Is there an official list of governmental domain names in Switzerland? (In Germany, there isn’t!)

Did you also follow include and redirect in SPF records?

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David Huser Mar 8

@i thanks!

on 1. no there is no officially maintained list AFAIK, the data source is Wikipedia (wikidata via sparql). There might be errors and missing URLs so I search for candidates like "commune-XY.ch" as well.

on 2. not yet, but will look into it

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پویان Pouyan

@davidhuser thanks for the quick reply. Wikipedia sounds good, I must give it a try. We used to just perform automate search queries (initially Google, later Qwant), filter out common results (e.g., yellow pages) and then verify manually if necessary.

Re 2.: I have the implementation, but not tested comprehensively yet. If you're interested, I can let you know as soon as I have an MVP. I did my best to implement SPF RFC completely.