Before fixing RoadRunner Email Error 530 one should know the reason behind and the impact. Due to Email error 530, you won’t be able to send the email to the recipient. The possible causes are using several servers for sending emails, internet network error. To troubleshoot you need to click “Tool” that is available at the top section, now select the “Accounts” tab. Further, you will have to click “Mail” and then click “Don Host Email Accounts”. Now open the properties window by selecting “Properties” and then ✔mark “My Server Needs Authentication” and then “ok” to confirm. RoadRunner email error 530 is resolved.