response was: 5.7.0 Authentication Required.

[send4u1]

Type of issue

Typo

Description

System.Net.Mail.SmtpException: The SMTP server requires a secure connection or the client was not authenticated. The server response was: 5.7.0 Authentication Required. For more information, go to at Registration.frmRegistration.SendEmail(String recipient, String subject, String body) in D:\FINALPROJECT\DADC\DADS_orginial_live\Registration\frmRegistration.aspx.cs:line 725 at Registration.frmRegistration.btnEmailOTP_Click(Object sender, EventArgs e) in D:\FINALPROJECT\DADC\DADS_orginial_live\Registration\frmRegistration.aspx.cs:line 677

[Enter feedback here]

Page URL

https://learn.microsoft.com/en-us/dotnet/api/system.net.mail.smtpclient.send?view=net-9.0

Content source URL

https://github.com/dotnet/dotnet-api-docs/blob/main/xml/System.Net.Mail/SmtpClient.xml

Document Version Independent Id

44c00065-d2fe-bda0-2e54-463a2a4806fd

Platform Id

766e6ee4-0ebb-bcf5-cf18-a2dcdfa8eb42

Article author

@karelz

[krwq]

@send4u1 can you please clarify the problem you're experiencing? If you're trying to get help on the error you're seeing I suspect you need to pass in credentials somewhere or enable TLS (SmtpClient.EnableSsl) and set the port correctly. As for the doc issue - this doesn't seem actionable as is.

[dotnet-policy-service]

This issue has been automatically closed due to no response from the original author. Feel free to reopen it if you have more information that can help us investigate the issue further.