c# - The SMTP server requires a secure connection or the client was not authenticated. The server response was: 5.5.1 Authentication Required? - Stack Overflow
SMTP Server Settings
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Jet Reports - The SMTP server requires a secure connection or the client was not authenticated. The server response was: 5.7.57 SMTP...
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c# - The SMTP server requires a secure connection or the client was not authenticated. The server response was: 5.5.1 Authentication Required? - Stack Overflow
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