Error sending email!

Hello when I am trying to add a new author or a person via ghost dashboard I am getting the following error message :
“Error sending email! Error sending email: Failed to send email. Reason: Can’t send mail - all recipients were rejected. Please check your email settings and resend the invitation.”

Can someone suggest me, how do I fix this error?

Checking your email settings might be a good place to start :smile:. You can check these in the Ghost Admin under Labs as well as the install configuration set in your config file: