When a certain user on our discourse forum (name is Rubén Martín) makes a reply, the email notification to other users fails to send with the below error:
553 <RubÃ©n MartÃn [nukeador] <firstname.lastname@example.org> Invalid email address.
We’re using Amazon SES as the SMTP server. I think it’s some type of encoding error?
Any help is appreciated.