What is a DNSBL?

What is a DNSBL?

A DNS-based Blacklist is a blacklist of locations on the internet that are prone to sending spam emails. You can define the delivery action that should be taken on these emails if DNSBL verification fails. This can be done from the Spam Control menu in the Control panel, under the DNSBL tab.

    Access your files securely from anywhere

      Zoho CRM Training Programs

      Learn how to use the best tools for sales force automation and better customer engagement from Zoho's implementation specialists.

      Zoho CRM Training
        Redefine the way you work
        with Zoho Workplace

          Zoho DataPrep Personalized Demo

          If you'd like a personalized walk-through of our data preparation tool, please request a demo and we'll be happy to show you how to get the best out of Zoho DataPrep.

          Zoho CRM Training

            Create, share, and deliver

            beautiful slides from anywhere.

            Get Started Now


              Zoho Sign now offers specialized one-on-one training for both administrators and developers.

              BOOK A SESSION





                          Quick Links Workflow Automation Data Collection
                          Web Forms Enterprise Begin Data Collection
                          Interactive Forms Workplace Data Collection App
                          CRM Forms Customer Service Accessible Forms
                          Digital Forms Marketing Forms for Small Business
                          HTML Forms Education Forms for Enterprise
                          Contact Forms E-commerce Forms for any business
                          Lead Generation Forms Healthcare Forms for Startups
                          Wordpress Forms Customer onboarding Order Forms for Small Business
                          No Code Forms Construction RSVP tool for holidays
                          Free Forms Travel
                          Prefill Forms Non-Profit

                          Intake Forms Legal
                          Mobile App
                          Form Designer HR
                          Mobile Forms
                          Card Forms Food Offline Forms
                          Assign Forms Photography
                          Mobile Forms Features
                          Translate Forms Real Estate Kiosk in Mobile Forms
                          Electronic Forms

                          Notification Emails for Forms Alternatives Security & Compliance
                          Holiday Forms Google Forms alternative  GDPR
                          Form to PDF Jotform alternative HIPAA Forms
                          Email Forms
                          Encrypted Forms
                          Embeddable Forms
                          Secure Forms
                          Drag and Drop form builder
                          WCAG


                                            You are currently viewing the help pages of Qntrl’s earlier version. Click here to view our latest version—Qntrl 3.0's help articles.




                                                Manage your brands on social media

                                                  Zoho Desk Resources

                                                  • Desk Community Learning Series


                                                  • Digest


                                                  • Functions


                                                  • Meetups


                                                  • Kbase


                                                  • Resources


                                                  • Glossary


                                                  • Desk Marketplace


                                                  • MVP Corner


                                                  • Word of the Day


                                                    Zoho Marketing Automation

                                                      Zoho Sheet Resources

                                                       

                                                          Zoho Forms Resources


                                                            Secure your business
                                                            communication with Zoho Mail


                                                            Mail on the move with
                                                            Zoho Mail mobile application

                                                              Stay on top of your schedule
                                                              at all times


                                                              Carry your calendar with you
                                                              Anytime, anywhere




                                                                    Zoho Sign Resources

                                                                      Sign, Paperless!

                                                                      Sign and send business documents on the go!

                                                                      Get Started Now




                                                                              Zoho TeamInbox Resources



                                                                                      Zoho DataPrep Resources



                                                                                        Zoho DataPrep Demo

                                                                                        Get a personalized demo or POC

                                                                                        REGISTER NOW


                                                                                          Design. Discuss. Deliver.

                                                                                          Create visually engaging stories with Zoho Show.

                                                                                          Get Started Now









                                                                                                              • Related Articles

                                                                                                              • How do I set the Spam control policy for the group?

                                                                                                                In the Control Panel, navigate to the Groups section. Select the required group, and under the Anti-Spam menu, define your spam preferences. Learn more.
                                                                                                              • What is blocked list of an organization?

                                                                                                                The organization blocked list can be defined for those senders and domains that you suspect might be spam. Navigate to the Spam control section in the Control Panel and add the relevant email addresses and domains to the Blocked List tab.  You can ...
                                                                                                              • Where can I view the spam emails that are awaiting moderation?

                                                                                                                The emails that have been classified as spam by SPF or DKIM failure and for which the option has been set as Move to Quarantine can be moderated. They can be viewed and moderated in the Control Panel >> Spam Control >> Quarantine. Learn more.
                                                                                                              • How can I control the Spam being delivered to my users accounts?

                                                                                                                The organization administrators can set up Spam Control rules for their organization based on SPF Failure, DKIM failure, Organization Blacklists and so on. The rules can control whether the emails should be bounced back, or sent to quarantine. Refer ...
                                                                                                              • What should I do when I receive spam in the inbox?

                                                                                                                Despite all the inbuilt spam filters, there is a minuscule chance for a spam email to end up in your Inbox. To avoid this, Use the Mark Spam feature. Our system is equipped to learn from user corrections and will adjust to user preference over time.  ...
                                                                                                                Wherever you are is as good as
                                                                                                                your workplace

                                                                                                                  Resources

                                                                                                                  Videos

                                                                                                                  Watch comprehensive videos on features and other important topics that will help you master Zoho CRM.



                                                                                                                  eBooks

                                                                                                                  Download free eBooks and access a range of topics to get deeper insight on successfully using Zoho CRM.



                                                                                                                  Webinars

                                                                                                                  Sign up for our webinars and learn the Zoho CRM basics, from customization to sales force automation and more.



                                                                                                                  CRM Tips

                                                                                                                  Make the most of Zoho CRM with these useful tips.



                                                                                                                    Zoho Show Resources