Dear Sir,
While i have sent email then i have getting mention error.
Server Error in '/bpm' Application.
The SMTP server requires a secure connection or the client was not authenticated. The server response was: 5.7.0 Authentication Required. Learn more at
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. Exception Details: 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. Learn more at Source Error:
Line 99: smtp.Credentials = networkCred;
Line 100: smtp.Port = smtpSection.Network.Port;
Line 101: smtp.Send(mm);
Line 102: ClientScript.RegisterStartupScript(this.GetType(), "alert", "alert('Email sent.');", true);
Line 103: }
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Source File: c:\inetpub\wwwroot\BPM\BPM\settled.aspx.cs Line: 101 Stack Trace:
[SmtpException: The SMTP server requires a secure connection or the client was not authenticated. The server response was: 5.7.0 Authentication Required. Learn more at]
System.Net.Mail.MailCommand.CheckResponse(SmtpStatusCode statusCode, String response) +1895591
System.Net.Mail.MailCommand.Send(SmtpConnection conn, Byte[] command, MailAddress from, Boolean allowUnicode) +49
System.Net.Mail.SmtpTransport.SendMail(MailAddress sender, MailAddressCollection recipients, String deliveryNotify, Boolean allowUnicode, SmtpFailedRecipientException& exception) +90
System.Net.Mail.SmtpClient.Send(MailMessage message) +1946
BPM.settled.email_Click(Object sender, EventArgs e) in c:\inetpub\wwwroot\BPM\BPM\settled.aspx.cs:101
System.Web.UI.WebControls.Button.OnClick(EventArgs e) +9796650
System.Web.UI.WebControls.Button.RaisePostBackEvent(String eventArgument) +211
System.Web.UI.WebControls.Button.System.Web.UI.IPostBackEventHandler.RaisePostBackEvent(String eventArgument) +12
System.Web.UI.Page.RaisePostBackEvent(IPostBackEventHandler sourceControl, String eventArgument) +15
System.Web.UI.Page.RaisePostBackEvent(NameValueCollection postData) +35
System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +1696
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Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.8.4494.0
