That does seem the better outcome - there’s no downside in being lenient here. > I did a quick scan of the Alexa Top 1 Million list. Currently around 0,06 % ar

That does seem the better outcome - there’s no downside in being lenient here. > I did a quick scan of the Alexa Top 1 Million list. Currently around 0,06 % are affected Only affects a small minority of mailservers, and even then only 0.06% of domains.