The server response was: 5.7.0 Authentication Required once I host it

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  I have an asp.net search form that includes an ajaxToolkit Combobox and a standard asp DropDownList. Both controls are bound to two separated SqlDatasource components.

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      ConnectionString="<%$ ConnectionStrings:db %>"
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      SelectCommand="
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      protected void ddlVeicoli_SelectedIndexChanged(object sender, EventArgs e)
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      private void Search()
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  I tought in this way I should filter ddlVeicoli items after selecting an item in cbConvenzionato... but it's not working... why?

  If I look into sdsVeicoli SelectParameters in debug I can see id_convenzionato being correctly set to selected value (id coming from cbConvenzionato) I bet also that sdsNoleggi dataset wiil be correctly updated with new values since I did this many times before. So why bound control it's not? I tried also to force a ddlVeicoli.DataBind() after sdsVeicoli.Select() call ... but this had no effect.
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  I have created a list using boto3 that contains all the subfolders in my S3 bucket. The list is sorted as below:

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• Wanted to send bulk emails using smtplib in python but I'm not able to send over 100 in one go. Is it possible to fix that using a loop?

  import os
  import smtplib
  from email.message import EmailMessage
  import pandas as pd
  
  email_addr = os.environ.get('airful_email_addr')
  email_pass = os.environ.get('airful_email_pass')
  
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  msg = EmailMessage()
  msg['Subject'] = 'Invitation for Job Hunt'
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  msg['bcc'] = ', '.join(contacts)
  
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      Hello there, 
      \n \n I hope you and your family are well! 
      \n I am writing to you to introduce you to an innovative, new platform on behalf of the team at GeekTrust! 
      \n \n GeekTrust helps in finding great jobs for software engineering professionals and onboarding them at some of the fastest growing Indian startups. Compensation and salaries are above market standards. 
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      \n \n Check it out here → Link : https://www.geektrust.in/?refToken=28cf61c2b9ba3de4002b27 
      \n \n Thank you,
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      \n On Behalf on GeekTrust""")
  
  msg.add_alternative("""\
  <!DOCTYPE html>
  <html>
      <body>
          Hello there,
          <br><br>I hope you and your family are well!
          <br>I am writing to you to introduce you to an innovative, new platform on behalf of the team at GeekTrust!
          <br><br>GeekTrust helps in finding great jobs for software engineering professionals and onboarding them at some of the fastest growing Indian startups. Compensation and salaries are <i><b>above</b></i> market standards.
          <br><br>The platform features coding challenges, exposure to open job positions at renowned companies and seamlessly manages the interviewing process - all in pursuit of giving you a great job hunting experience and land something really game changing for your career!
          <br><br>Check it out here → <a href="https://www.geektrust.in/?refToken=28cf61c2b9ba3de4002b27">Link</a>
          <br><br>Thank you,
          <br>Subhro,
          <br>On Behalf of GeekTrust.
      </body>
  </html>
  """, subtype = 'html')
  
  with smtplib.SMTP_SSL('smtp.gmail.com', 465) as i:
      i.login(email_addr, email_pass)
      i.send_message(msg)
  

  It seems that the limit for this script per email is 100, is there a way to loop in this script so that I can send it in batches? Any other way to send the whole csv data in one go is also appreciated.

  Please note that my account limit for emails is 2000 per day. I have also not exceeded that. List contained around 800 odd email id's.
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  and then we can use Email.send({}) to send the email

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