Testing emails are sent out successfully, but invitation emails are never sent out

Hi I encountered a weird issue. I can send out testing emails successfully in the admin widget.

However, when I tried to send invitation emails to others, the emails are never received, even if the testing emails can be sent to the same email address successfully. Could anybody help with this?

I have tried the solutions below by updating the discourse to the latest version, but it does not work:

Thank you!

1 Like

Finally, I figure it out by myself.

Here is the solution:


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