remember when yahoo mail was the first one to implement DKIM validation and then all mailing list owners added a footer telling their subscribers not to use yah

remember when yahoo mail was the first one to implement DKIM validation and then all mailing list owners added a footer telling their subscribers not to use yahoo mail because it was broken, instead of calling their mailing list providers to upload a key? yeah nobody remembers, but yahoo probably do. i doubt they will err on the side of security again.