The SMTP Server Requires a Secure Connection or The Client Was Not Authenticated. The Server Response Was: 5.5.1 Authentication Required. Learn More At Hatası ve Çözümü
Merhaba, Asp.NET yahut Asp.NET MVC projelerinde gmail üzerinden yaptığınız mail işlemlerinde aşağıdaki hatayı alabilirsiniz. The SMTP server requires a secure connection or the client was not authenticated. The server response was: 5.5.1 Authentication Required....
