Error: SMTP Error 534

What's Causing This Error

SMTP error 534 occurs when the client authentication is weak and the server requires stronger authentication to accept the connection. It occurs in cases where email providers such as Google disables weak authentication to ensure secure connectivity.

Solution - Here's How To Resolve It

The resolution may depend on the authentication requirements set by the email server. Therefore, it is vital to understand the authentication requirements and configure the client with the necessary controls and settings to facilitate the expected client authentication.