✅ SMTP server broke

The SMTP server requires a secure connection or the client was not authenticated. The server response was: 5.7.57 Client not authenticated to send mail. Error: 535 5.7.139 Authentication unsuccessful, basic authentication is disabled. [MW4PR04CA0249.namprd04.prod.outlook.com 2024-10-16T23:46:33.247Z 08DCEE0C14048537]

client = new SmtpClient("outlook.office365.com", 587);

client.Timeout = 20000;

client.EnableSsl = true;

client.DeliveryMethod = SmtpDeliveryMethod.Network;

client.UseDefaultCredentials = false;

client.Credentials = new System.Net.NetworkCredential("username", "password");