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How to solve: "System Mails marked as possible phishing"

I've tried to reset a test user password and this happened with Gmail. I don't whon't that!
I'm running vanilla from github master branch
0
Answers
Most likely this is not the fault of vanilla. Spam protection works differently. Most likely someone in your server's IP range has been spreading some malware. If I were you, I would contact the host.
I think is Gmail to much intelligent! Hotmail don't care of that. I now think it' normal cause the system identifies itself to users by an arbitrary email choosed by admin.