He configurado Discourse, he activado el correo electrónico de la cuenta, ¿por qué sigo recibiendo correos electrónicos de información de activación de cuenta cada pocos minutos? ¿Cómo configuro para solucionar este error?

[supermathie (Michael Brown)]

@john10

However, after that, it keeps resending

@john10

Job exception: Net::SMTPUnknownError
net-smtp-0.5.1/lib/net/smtp.rb:1036:in `check_response' 
net-smtp-0.5.1/lib/net/smtp.rb:1010:in `getok' 
net-smtp-0.5.1/lib/net/smtp.rb:986:in `quit' 
net-smtp-0.5.1/lib/net/smtp.rb:732:in `do_finish' 

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.