![visual studio - 'The SMTP server requires a secure connection or the client was not authenticated. The server response was: 5.7.0 Authentication Required - Stack Overflow visual studio - 'The SMTP server requires a secure connection or the client was not authenticated. The server response was: 5.7.0 Authentication Required - Stack Overflow](https://i.stack.imgur.com/w1ObP.png)
visual studio - 'The SMTP server requires a secure connection or the client was not authenticated. The server response was: 5.7.0 Authentication Required - Stack Overflow
![WHM - Need to disable SMTP Restrictions for using external SMTP servers for sending emails - Rahul Singla WHM - Need to disable SMTP Restrictions for using external SMTP servers for sending emails - Rahul Singla](https://www.rahulsingla.com/wp-content/uploads/2020/03/image-4.png)
WHM - Need to disable SMTP Restrictions for using external SMTP servers for sending emails - Rahul Singla
![Self-hosting' a Mail Server with a Custom Domain and Partial Redundancy – The Relays (Outgoing) - Cross Connected Self-hosting' a Mail Server with a Custom Domain and Partial Redundancy – The Relays (Outgoing) - Cross Connected](https://crossconnected.co.uk/wp-content/uploads/2020/03/image.png)
Self-hosting' a Mail Server with a Custom Domain and Partial Redundancy – The Relays (Outgoing) - Cross Connected
![Self-hosting' a Mail Server with a Custom Domain and Partial Redundancy – The Relays (Outgoing) - Cross Connected Self-hosting' a Mail Server with a Custom Domain and Partial Redundancy – The Relays (Outgoing) - Cross Connected](https://crossconnected.co.uk/wp-content/uploads/2020/03/image-1.png)