#GMail is harmful to e-mail ecosystem; its antispam blocking policy matches too many valid messages as spam.
It blocked LastPass email leak warning email, because it contained "a link" to a leaked site.
It blocked an e-mail from goverment agency addressed directly to me.
It discriminates all non-gmail servers, and it's pretty much impossible to own a private SMTP server these days, because GMail will classify everything as spam.
It's not how e-mail should work.
Consider dropping GMail.
@antekone outlook.com has similar issues. It blocks whole IP ranges (e.g. the whole Hetzner IP space) and drops or bounces mails from there (sometimes even silenty).
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