There are situations when you may need to block domains but Sender Filtering only accepts one input at a time. This article will show the steps in blocking bulk domains in IMSVA
Follow these steps:
- Create a Policy that makes use of an Address Group containing a "list of domains" you want to block/quarantine. You can list the domains in this sample format in a notepad:
- Import this to an "Address Group" you have created.
- An Address Group for Internal Domains is created
- Use this on the policy's Sender/Recipient filter: