Polling POP3 e envio SMTP falhando repentinamente

[JammyDodger]

Acho que agora você precisa habilitar a 2FA na sua conta do Google e configurar uma senha de app:

Connection to the POP3 server is failing with an authentication error. Please check your POP3 settings

I recommend turning on 2FA on the account and setting up an App Password for Discourse. The policy change is about the “allow less secure app access” option being deprecated. More info on this here: