Hi, for security reasons we are about to switch off NTLM-Protocol in our Network. In my projects I was using System.Net.Mail to send SMTP Emails SmtpServer.Port = 465 SmtpServer.Host = “smtp-server” SmtpServer.UseDefaultCredentials = True SmtpServer.EnableSsl = True this does not work when NT…

SMTP without NTLM Protocol

FrankK October 1, 2024, 1:44pm 4

Hi,
I got the issue fixed, our Exchange-Load-Balancer was / is the Problem. It seems so that not all balanced Machines are providing the same Services.

Thank you for your prompt Support

Best regards
Frank