 -----------------------------------------------------------------------------
Date : 01/05/2023 15:57:34

System.Net.Mail.SmtpException
Message : 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
StackTrace :    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 SendEmail.SendPDFEmail(DataTable dt1, String emailid, String subject, String Bodytest) in D:\notificationtest\Onlinerealsoft.com1\App_Code\SendEmail.cs:line 175
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Date : 01/06/2023 12:22:23

System.Net.Mail.SmtpException
Message : 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
StackTrace :    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 SendEmail.SendPDFEmail(DataTable dt1, String emailid, String subject, String Bodytest) in D:\notificationtest\Onlinerealsoft.com1\App_Code\SendEmail.cs:line 175
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Date : 01/06/2023 16:38:23

System.Net.Mail.SmtpException
Message : 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
StackTrace :    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 SendEmail.SendPDFEmail(DataTable dt1, String emailid, String subject, String Bodytest) in D:\notificationtest\Onlinerealsoft.com1\App_Code\SendEmail.cs:line 175
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Date : 01/06/2023 17:03:26

System.Net.Mail.SmtpException
Message : 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
StackTrace :    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 SendEmail.SendPDFEmail(DataTable dt1, String emailid, String subject, String Bodytest) in D:\notificationtest\Onlinerealsoft.com1\App_Code\SendEmail.cs:line 175
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Date : 02/01/2023 15:30:18

System.Net.Mail.SmtpException
Message : Failure sending mail.
StackTrace :    at System.Net.Mail.SmtpClient.Send(MailMessage message)
   at SendEmail.SendPDFEmail(DataTable dt1, String emailid, String subject, String Bodytest) in D:\notificationtest\Onlinerealsoft.com1\App_Code\SendEmail.cs:line 175
System.IO.IOException
Message : Unable to read data from the transport connection: net_io_connectionclosed.
StackTrace :    at System.Net.Mail.SmtpReplyReaderFactory.ProcessRead(Byte[] buffer, Int32 offset, Int32 read, Boolean readLine)
   at System.Net.Mail.SmtpReplyReaderFactory.ReadLines(SmtpReplyReader caller, Boolean oneLine)
   at System.Net.Mail.SmtpReplyReaderFactory.ReadLine(SmtpReplyReader caller)
   at System.Net.Mail.CheckCommand.Send(SmtpConnection conn, 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)
-----------------------------------------------------------------------------
Date : 02/06/2023 18:56:17

System.Net.Mail.SmtpException
Message : Mailbox unavailable. The server response was: 5.4.5 Daily user sending quota exceeded. m3-20020a17090a34c300b002302da23744sm1532130pjf.50 - gsmtp
StackTrace :    at System.Net.Mail.DataCommand.CheckResponse(SmtpStatusCode statusCode, String serverResponse)
   at System.Net.Mail.DataCommand.Send(SmtpConnection conn)
   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 SendEmail.SendPDFEmail(DataTable dt1, String emailid, String subject, String Bodytest) in D:\notificationtest\Onlinerealsoft.com1\App_Code\SendEmail.cs:line 175
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Date : 02/07/2023 10:12:49

System.Net.Mail.SmtpException
Message : 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
StackTrace :    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 SendEmail.SendPDFEmail(DataTable dt1, String emailid, String subject, String Bodytest) in D:\notificationtest\Onlinerealsoft.com1\App_Code\SendEmail.cs:line 175
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Date : 02/08/2023 10:57:04

System.Net.Mail.SmtpException
Message : 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
StackTrace :    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 SendEmail.SendPDFEmail(DataTable dt1, String emailid, String subject, String Bodytest) in D:\notificationtest\Onlinerealsoft.com1\App_Code\SendEmail.cs:line 175
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Date : 03/01/2023 12:27:56

System.Net.Mail.SmtpException
Message : Failure sending mail.
StackTrace :    at System.Net.Mail.SmtpClient.Send(MailMessage message)
   at SendEmail.SendPDFEmail(DataTable dt1, String emailid, String subject, String Bodytest) in D:\notificationtest\Onlinerealsoft.com1\App_Code\SendEmail.cs:line 175
System.IO.IOException
Message : Unable to read data from the transport connection: net_io_connectionclosed.
StackTrace :    at System.Net.Mail.SmtpReplyReaderFactory.ProcessRead(Byte[] buffer, Int32 offset, Int32 read, Boolean readLine)
   at System.Net.Mail.SmtpReplyReaderFactory.ReadLines(SmtpReplyReader caller, Boolean oneLine)
   at System.Net.Mail.SmtpReplyReaderFactory.ReadLine(SmtpReplyReader caller)
   at System.Net.Mail.CheckCommand.Send(SmtpConnection conn, 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)
-----------------------------------------------------------------------------
Date : 03/18/2023 11:13:03

System.Net.Mail.SmtpException
Message : 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
StackTrace :    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 SendEmail.SendPDFEmail(DataTable dt1, String emailid, String subject, String Bodytest) in D:\notificationtest\Onlinerealsoft.com1\App_Code\SendEmail.cs:line 175
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Date : 03/18/2023 14:46:44

System.Net.Mail.SmtpException
Message : 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
StackTrace :    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 SendEmail.SendPDFEmail(DataTable dt1, String emailid, String subject, String Bodytest) in D:\notificationtest\Onlinerealsoft.com1\App_Code\SendEmail.cs:line 175
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Date : 03/18/2023 15:03:36

System.Net.Mail.SmtpException
Message : 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
StackTrace :    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 SendEmail.SendPDFEmail(DataTable dt1, String emailid, String subject, String Bodytest) in D:\notificationtest\Onlinerealsoft.com1\App_Code\SendEmail.cs:line 175
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Date : 03/18/2023 17:42:51

System.Net.Mail.SmtpException
Message : 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
StackTrace :    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 SendEmail.SendPDFEmail(DataTable dt1, String emailid, String subject, String Bodytest) in D:\notificationtest\Onlinerealsoft.com1\App_Code\SendEmail.cs:line 175
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Date : 03/20/2023 16:45:13

System.Net.Mail.SmtpException
Message : 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
StackTrace :    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 SendEmail.SendPDFEmail(DataTable dt1, String emailid, String subject, String Bodytest) in D:\notificationtest\Onlinerealsoft.com1\App_Code\SendEmail.cs:line 175
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Date : 03/21/2023 08:15:38

System.Net.Mail.SmtpException
Message : 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
StackTrace :    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 SendEmail.SendPDFEmail(DataTable dt1, String emailid, String subject, String Bodytest) in D:\notificationtest\Onlinerealsoft.com1\App_Code\SendEmail.cs:line 175
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Date : 03/21/2023 21:05:14

System.Net.Mail.SmtpException
Message : 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
StackTrace :    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 SendEmail.SendPDFEmail(DataTable dt1, String emailid, String subject, String Bodytest) in D:\notificationtest\Onlinerealsoft.com1\App_Code\SendEmail.cs:line 175
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Date : 03/22/2023 14:35:53

System.Net.Mail.SmtpException
Message : 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
StackTrace :    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 SendEmail.SendPDFEmail(DataTable dt1, String emailid, String subject, String Bodytest) in D:\notificationtest\Onlinerealsoft.com1\App_Code\SendEmail.cs:line 175
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Date : 04/01/2023 11:27:14

System.Net.Mail.SmtpException
Message : Failure sending mail.
StackTrace :    at System.Net.Mail.SmtpClient.Send(MailMessage message)
   at SendEmail.SendPDFEmail(DataTable dt1, String emailid, String subject, String Bodytest) in D:\notificationtest\Onlinerealsoft.com1\App_Code\SendEmail.cs:line 175
System.IO.IOException
Message : Unable to read data from the transport connection: net_io_connectionclosed.
StackTrace :    at System.Net.Mail.SmtpReplyReaderFactory.ProcessRead(Byte[] buffer, Int32 offset, Int32 read, Boolean readLine)
   at System.Net.Mail.SmtpReplyReaderFactory.ReadLines(SmtpReplyReader caller, Boolean oneLine)
   at System.Net.Mail.SmtpReplyReaderFactory.ReadLine(SmtpReplyReader caller)
   at System.Net.Mail.CheckCommand.Send(SmtpConnection conn, 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)
-----------------------------------------------------------------------------
Date : 05/30/2023 12:11:49

System.Net.Mail.SmtpException
Message : 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
StackTrace :    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 SendEmail.SendPDFEmail(DataTable dt1, String emailid, String subject, String Bodytest) in D:\notificationtest\Onlinerealsoft.com1\App_Code\SendEmail.cs:line 175
-----------------------------------------------------------------------------
Date : 05/30/2023 13:29:50

System.Net.Mail.SmtpException
Message : 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
StackTrace :    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 SendEmail.SendPDFEmail(DataTable dt1, String emailid, String subject, String Bodytest) in D:\notificationtest\Onlinerealsoft.com1\App_Code\SendEmail.cs:line 175
-----------------------------------------------------------------------------
Date : 05/30/2023 15:52:42

System.Net.Mail.SmtpException
Message : 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
StackTrace :    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 SendEmail.SendPDFEmail(DataTable dt1, String emailid, String subject, String Bodytest) in D:\notificationtest\Onlinerealsoft.com1\App_Code\SendEmail.cs:line 175
-----------------------------------------------------------------------------
Date : 05/31/2023 12:59:35

System.Net.Mail.SmtpException
Message : 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
StackTrace :    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 SendEmail.SendPDFEmail(DataTable dt1, String emailid, String subject, String Bodytest) in D:\notificationtest\Onlinerealsoft.com1\App_Code\SendEmail.cs:line 175
-----------------------------------------------------------------------------
Date : 05/31/2023 15:56:21

System.Net.Mail.SmtpException
Message : 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
StackTrace :    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 SendEmail.SendPDFEmail(DataTable dt1, String emailid, String subject, String Bodytest) in D:\notificationtest\Onlinerealsoft.com1\App_Code\SendEmail.cs:line 175
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Date : 05/31/2023 19:01:34

System.Net.Mail.SmtpException
Message : 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
StackTrace :    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 SendEmail.SendPDFEmail(DataTable dt1, String emailid, String subject, String Bodytest) in D:\notificationtest\Onlinerealsoft.com1\App_Code\SendEmail.cs:line 175
-----------------------------------------------------------------------------
Date : 06/01/2023 11:04:08

System.Net.Mail.SmtpException
Message : 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
StackTrace :    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 SendEmail.SendPDFEmail(DataTable dt1, String emailid, String subject, String Bodytest) in D:\notificationtest\Onlinerealsoft.com1\App_Code\SendEmail.cs:line 175
-----------------------------------------------------------------------------
Date : 06/01/2023 11:17:26

System.Net.Mail.SmtpException
Message : 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
StackTrace :    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 SendEmail.SendPDFEmail(DataTable dt1, String emailid, String subject, String Bodytest) in D:\notificationtest\Onlinerealsoft.com1\App_Code\SendEmail.cs:line 175
-----------------------------------------------------------------------------
Date : 06/01/2023 11:59:59

System.Net.Mail.SmtpException
Message : 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
StackTrace :    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 SendEmail.SendPDFEmail(DataTable dt1, String emailid, String subject, String Bodytest) in D:\notificationtest\Onlinerealsoft.com1\App_Code\SendEmail.cs:line 175
-----------------------------------------------------------------------------
Date : 06/01/2023 13:49:55

System.Net.Mail.SmtpException
Message : 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
StackTrace :    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 SendEmail.SendPDFEmail(DataTable dt1, String emailid, String subject, String Bodytest) in D:\notificationtest\Onlinerealsoft.com1\App_Code\SendEmail.cs:line 175
-----------------------------------------------------------------------------
Date : 06/02/2023 15:28:36

System.Net.Mail.SmtpException
Message : 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
StackTrace :    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 SendEmail.SendPDFEmail(DataTable dt1, String emailid, String subject, String Bodytest) in D:\notificationtest\Onlinerealsoft.com1\App_Code\SendEmail.cs:line 175
-----------------------------------------------------------------------------
Date : 06/02/2023 17:48:47

System.Net.Mail.SmtpException
Message : 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
StackTrace :    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 SendEmail.SendPDFEmail(DataTable dt1, String emailid, String subject, String Bodytest) in D:\notificationtest\Onlinerealsoft.com1\App_Code\SendEmail.cs:line 175
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Date : 08/30/2025 16:44:01

System.NullReferenceException
Message : Object reference not set to an instance of an object.
StackTrace :    at iTextSharp.text.html.simpleparser.HTMLWorker.CreateLineSeparator(IDictionary`2 attrs)
   at iTextSharp.text.html.simpleparser.HTMLTagProcessors.HTMLTagProcessor_HR.StartElement(HTMLWorker worker, String tag, IDictionary`2 attrs)
   at iTextSharp.text.html.simpleparser.HTMLWorker.StartElement(String tag, IDictionary`2 attrs)
   at iTextSharp.text.xml.simpleparser.SimpleXMLParser.Go(TextReader reader)
   at iTextSharp.text.html.simpleparser.HTMLWorker.Parse(TextReader reader)
   at SendEmail.SendPDFEmail_Admin(DataTable dt1, String emailid, String subject, String Bodytest, String totalusers) in D:\NewProjects_2020\CloudApplication\CloudSoftware_2025\Onlinerealsoft.com MultiLanguage\App_Code\SendEmail.cs:line 158
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Date : 08/30/2025 16:46:53

System.NullReferenceException
Message : Object reference not set to an instance of an object.
StackTrace :    at iTextSharp.text.html.simpleparser.HTMLWorker.CreateLineSeparator(IDictionary`2 attrs)
   at iTextSharp.text.html.simpleparser.HTMLTagProcessors.HTMLTagProcessor_HR.StartElement(HTMLWorker worker, String tag, IDictionary`2 attrs)
   at iTextSharp.text.html.simpleparser.HTMLWorker.StartElement(String tag, IDictionary`2 attrs)
   at iTextSharp.text.xml.simpleparser.SimpleXMLParser.Go(TextReader reader)
   at iTextSharp.text.html.simpleparser.HTMLWorker.Parse(TextReader reader)
   at SendEmail.SendPDFEmail_Admin(DataTable dt1, String emailid, String subject, String Bodytest, String totalusers) in D:\NewProjects_2020\CloudApplication\CloudSoftware_2025\Onlinerealsoft.com MultiLanguage\App_Code\SendEmail.cs:line 158
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Date : 08/30/2025 16:47:34

System.NullReferenceException
Message : Object reference not set to an instance of an object.
StackTrace :    at iTextSharp.text.html.simpleparser.HTMLWorker.CreateLineSeparator(IDictionary`2 attrs)
   at iTextSharp.text.html.simpleparser.HTMLTagProcessors.HTMLTagProcessor_HR.StartElement(HTMLWorker worker, String tag, IDictionary`2 attrs)
   at iTextSharp.text.html.simpleparser.HTMLWorker.StartElement(String tag, IDictionary`2 attrs)
   at iTextSharp.text.xml.simpleparser.SimpleXMLParser.Go(TextReader reader)
   at iTextSharp.text.html.simpleparser.HTMLWorker.Parse(TextReader reader)
   at SendEmail.SendPDFEmail_Admin(DataTable dt1, String emailid, String subject, String Bodytest, String totalusers) in D:\NewProjects_2020\CloudApplication\CloudSoftware_2025\Onlinerealsoft.com MultiLanguage\App_Code\SendEmail.cs:line 158
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Date : 08/30/2025 16:48:40

System.NullReferenceException
Message : Object reference not set to an instance of an object.
StackTrace :    at iTextSharp.text.html.simpleparser.HTMLWorker.CreateLineSeparator(IDictionary`2 attrs)
   at iTextSharp.text.html.simpleparser.HTMLTagProcessors.HTMLTagProcessor_HR.StartElement(HTMLWorker worker, String tag, IDictionary`2 attrs)
   at iTextSharp.text.html.simpleparser.HTMLWorker.StartElement(String tag, IDictionary`2 attrs)
   at iTextSharp.text.xml.simpleparser.SimpleXMLParser.Go(TextReader reader)
   at iTextSharp.text.html.simpleparser.HTMLWorker.Parse(TextReader reader)
   at SendEmail.SendPDFEmail_Admin(DataTable dt1, String emailid, String subject, String Bodytest, String totalusers) in D:\NewProjects_2020\CloudApplication\CloudSoftware_2025\Onlinerealsoft.com MultiLanguage\App_Code\SendEmail.cs:line 158
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Date : 08/30/2025 16:55:26

System.NullReferenceException
Message : Object reference not set to an instance of an object.
StackTrace :    at iTextSharp.text.html.simpleparser.HTMLWorker.CreateLineSeparator(IDictionary`2 attrs)
   at iTextSharp.text.html.simpleparser.HTMLTagProcessors.HTMLTagProcessor_HR.StartElement(HTMLWorker worker, String tag, IDictionary`2 attrs)
   at iTextSharp.text.html.simpleparser.HTMLWorker.StartElement(String tag, IDictionary`2 attrs)
   at iTextSharp.text.xml.simpleparser.SimpleXMLParser.Go(TextReader reader)
   at iTextSharp.text.html.simpleparser.HTMLWorker.Parse(TextReader reader)
   at SendEmail.SendPDFEmail_Admin(DataTable dt1, String emailid, String subject, String Bodytest, String totalusers) in D:\NewProjects_2020\CloudApplication\CloudSoftware_2025\Onlinerealsoft.com MultiLanguage\App_Code\SendEmail.cs:line 158
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Date : 08/30/2025 17:30:54

System.NullReferenceException
Message : Object reference not set to an instance of an object.
StackTrace :    at iTextSharp.text.pdf.PdfDocument.Open()
   at SendEmail.SendPDFEmail_Admin(DataTable dt1, String emailid, String subject, String Bodytest, String totalusers) in D:\NewProjects_2020\CloudApplication\CloudSoftware_2025\Onlinerealsoft.com MultiLanguage\App_Code\SendEmail.cs:line 167
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Date : 09/02/2025 12:40:03

System.NullReferenceException
Message : Object reference not set to an instance of an object.
StackTrace :    at iTextSharp.text.html.simpleparser.HTMLWorker.CreateLineSeparator(IDictionary`2 attrs)
   at iTextSharp.text.html.simpleparser.HTMLTagProcessors.HTMLTagProcessor_HR.StartElement(HTMLWorker worker, String tag, IDictionary`2 attrs)
   at iTextSharp.text.html.simpleparser.HTMLWorker.StartElement(String tag, IDictionary`2 attrs)
   at iTextSharp.text.xml.simpleparser.SimpleXMLParser.Go(TextReader reader)
   at iTextSharp.text.html.simpleparser.HTMLWorker.Parse(TextReader reader)
   at SendEmail.SendPDFEmail_Admin(DataTable dt1, String emailid, String subject, String Bodytest, String totalusers) in D:\NewProjects_2020\CloudApplication\CloudSoftware_2025\Onlinerealsoft.com MultiLanguage\App_Code\SendEmail.cs:line 164
