On Thu, Jul 13, 2017 at 4:25 PM, Cheng Ye <cheng__ye@126.com> wrote:

What should I do to fix this problem?


It's because the first post from the new subscriber needs human review. It's a preset of the mailing list. It's OK now.
 
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Regards,

Tian Shixiong
Fedora Project Contributor