Mail sending paused due to “unauthorized” mailaddress

I constantly get the error message that my e-mail is not yet authorized. This is because I typed in a wrong email far time ago. I already solved that out and changed the email in the settings up to the actual (and authorized!) email address, but the error message is still shown and sending does not work from time to time.

So actually it doesn’t send my mails even though the from-email in the settings is alright and authorized because another email which is not anywhere in the settings wasn’t authorized.