حضرت خواجہ سیدنا معین الدین حسن چشتی سنجاری اجمیری رحمۃ اللہ علیہ

[Solved] ASP.Net Error: The SMTP server requires a secure connection or the client was not authenticated

George61...

I got an error in my browser

The SMTP server requires a secure connection or the client was not authenticated. The server response was: 5.7.0 Authentication Required.

dharmend...

0 1

Refer below article.

I agree, here is the link: https://www.e-iceblue.com/Introduce/spire-office-for-net-free.html

GMAIL Error: The SMTP server requires a secure connection or the client was not authenticated