Deployed Discourse users registered and activated, but the activation email is still being sent

[supermathie (Michael Brown)]

If you’re using QQ for mail they have problems and many others have reported the same results:

我搭建了discourse，激活了账户邮箱，为什么还是每隔一会儿不断发送激活账户信息的邮件？？怎么配置解决这个bug

Your authentication setup is correct, and the mail you’re receiving is the same job, over and over again. Discourse gets through the whole mail sending process but after receiving an unknown response code it aborts, thinking the mail send failed. But the mail server actually did accept the mail! Since Discourse didn’t realise the send was actually successful, it reschedules the job over and over.

You’ll need to use a different provider.