If you'd like to book a railway ticket for your next trip, you might just sign up and use their online ticket buying system.
The funny thing is, that lots of people have difficulties to get the confirmation email in their inbox after the registration.
It seems only the QQ Mailbox can solve this issue. see
Let's check the header to see what happens. I signed up with my netease mailaddress at 163.com.
12306 is straight using double opt-in, but they are not using any authentications, even don't set up a SPF record. What a shame!
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