Users used to receive email from wordpress, f.i. when they forgot their password. Now email from wordpress[at]mydomain.com isn’t arriving anymore. I started to read posts of this forum.
In messages in my Maildir I read: 'Diagnostic-Code: smtp; 554 5.7.1 Message scored extremely high on spam scale.'
I tried to use the plugin Configure SMTP in different ways, using different email addresses. But: ‘SMTP server error: 5.7.1 : Recipient address rejected: Access denied.’.
Anybody any clues?