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.

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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. ...