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by mpldr 1167 days ago
> Risk of being blocked by big players (gmail/O365) is real but IMHO very low if you follow BCP

Can confirm, only issue I have is with outlook.com because their MTA-STS validator is… for lack of a better word: wrong.

I decided that replying to mails from outlook.com is not part of my mailserver's offerings and if it's required others channels have to be sought out. I'm not going to violate established standards just so Microsoft can do things their way.