I have a Discourse setup, 1.6.6, stock install. Email functionality is working perfectly, except signup emails.
When I try to create a new test user in incognito mode, the email is not sent. If I try to click “Send Activation Email” as admin, it’s the same, nothing sent.
It’s not even visible in
/admin/email/sent, or in skipped or bounced or rejected list. It simply disappears.
What is happening?