8/8/2024 3:27:10 PM InvoiceNo : B2B/24-25/000137,Email ID :chandan.kumar@itdoseinfo.com, Error : 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 System.Net.Mail.MailCommand.CheckResponse(SmtpStatusCode statusCode, String response)
   at System.Net.Mail.MailCommand.Send(SmtpConnection conn, Byte[] command, MailAddress from, Boolean allowUnicode)
   at System.Net.Mail.SmtpTransport.SendMail(MailAddress sender, MailAddressCollection recipients, String deliveryNotify, Boolean allowUnicode, SmtpFailedRecipientException& exception)
   at System.Net.Mail.SmtpClient.Send(MailMessage message)
   at InvoiceCreation.sendnow(String EmailAddress, String EmailAddress_CC, String InvoiceNo, DataTable dtExcel, DataTable dtEmail)
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 InvoiceCreation.sendnow(String EmailAddress, String EmailAddress_CC, String InvoiceNo, DataTable dtExcel, DataTable dtEmail)
   at InvoiceCreation.sendmailnow()
8/8/2024 3:27:15 PM InvoiceNo : B2B/24-25/000137,Email ID :chandan.kumar@itdoseinfo.com, Error : 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 System.Net.Mail.MailCommand.CheckResponse(SmtpStatusCode statusCode, String response)
   at System.Net.Mail.MailCommand.Send(SmtpConnection conn, Byte[] command, MailAddress from, Boolean allowUnicode)
   at System.Net.Mail.SmtpTransport.SendMail(MailAddress sender, MailAddressCollection recipients, String deliveryNotify, Boolean allowUnicode, SmtpFailedRecipientException& exception)
   at System.Net.Mail.SmtpClient.Send(MailMessage message)
   at InvoiceCreation.sendnow(String EmailAddress, String EmailAddress_CC, String InvoiceNo, DataTable dtExcel, DataTable dtEmail)
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 InvoiceCreation.sendnow(String EmailAddress, String EmailAddress_CC, String InvoiceNo, DataTable dtExcel, DataTable dtEmail)
   at InvoiceCreation.sendmailnow()
8/8/2024 3:27:21 PM InvoiceNo : B2B/24-25/000137,Email ID :chandan.kumar@itdoseinfo.com, Error : 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 System.Net.Mail.MailCommand.CheckResponse(SmtpStatusCode statusCode, String response)
   at System.Net.Mail.MailCommand.Send(SmtpConnection conn, Byte[] command, MailAddress from, Boolean allowUnicode)
   at System.Net.Mail.SmtpTransport.SendMail(MailAddress sender, MailAddressCollection recipients, String deliveryNotify, Boolean allowUnicode, SmtpFailedRecipientException& exception)
   at System.Net.Mail.SmtpClient.Send(MailMessage message)
   at InvoiceCreation.sendnow(String EmailAddress, String EmailAddress_CC, String InvoiceNo, DataTable dtExcel, DataTable dtEmail)
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 InvoiceCreation.sendnow(String EmailAddress, String EmailAddress_CC, String InvoiceNo, DataTable dtExcel, DataTable dtEmail)
   at InvoiceCreation.sendmailnow()
8/8/2024 3:27:29 PM InvoiceNo : B2B/24-25/000137,Email ID :chandan.kumar@itdoseinfo.com, Error : 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 System.Net.Mail.MailCommand.CheckResponse(SmtpStatusCode statusCode, String response)
   at System.Net.Mail.MailCommand.Send(SmtpConnection conn, Byte[] command, MailAddress from, Boolean allowUnicode)
   at System.Net.Mail.SmtpTransport.SendMail(MailAddress sender, MailAddressCollection recipients, String deliveryNotify, Boolean allowUnicode, SmtpFailedRecipientException& exception)
   at System.Net.Mail.SmtpClient.Send(MailMessage message)
   at InvoiceCreation.sendnow(String EmailAddress, String EmailAddress_CC, String InvoiceNo, DataTable dtExcel, DataTable dtEmail)
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 InvoiceCreation.sendnow(String EmailAddress, String EmailAddress_CC, String InvoiceNo, DataTable dtExcel, DataTable dtEmail)
   at InvoiceCreation.sendmailnow()