It is a Linux plan.
From email is valid.
I have not changed any redirects. I did not even realize you could, but in any event, the email is valid. If I use an invalid email, the form stays on the Email Password page. If I use a valid email, it forwards to the login page, as it should.
I do not gete any errors, transport or otherwise. The email just never arrives.
I was not aware that there was a Security Assist version after 1.1.9. I will upgrade it and see if that resolves the issue.