user3591003
Reputation: 11
5.5.1 Authentication Required: Error trying to send a mail with .NET c# or vb
New secure setting on GOOGLE WORLD avoid using test code using your custom Gmail accounts.
The full Error is: "The SMTP server requires a secure connection or the client was not authenticated. The server response was: 5.5.1 Authentication Required."
Upvotes: 0
Views: 1631
Answers (1)
user3591003
Reputation: 11
Solution:
Enter to this site when logged on your gmail account and enabled "Access Less Secure Apps"
https://www.google.com/settings/security/lesssecureapps
that all!
Upvotes: 1
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