Do we still want to reject CC or BCC emails in?

[k4rtik (Kartik)]

@zogstrip 您是否知道可能出了什么问题？

似乎在这个提交中曾经有过一个检查：https://github.com/discourse/discourse/commit/93d1cc6294085008e025bb3032b231a6a81c6480（具体见 discourse/lib/email/receiver.rb at 93d1cc6294085008e025bb3032b231a6a81c6480 · discourse/discourse · GitHub receiver.rb 中似乎已被重构。