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![How to fix SMTP authentication error [SOLVED] | Enable gmail access from your software application - YouTube](https://i.ytimg.com/vi/iQqAKwl7HBE/maxresdefault.jpg "How to fix SMTP authentication error [SOLVED] | Enable gmail access from your software application - YouTube")
How to fix SMTP authentication error [SOLVED] | Enable gmail access from your software application - YouTube
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Gmail Smtp Error : 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 « Asp.Net,MVC,C#.Net,VB.Net,Windows Application,WPF,Javascript,jQuery,HTML,Tips ...
