we use email-to-case but a lot of unwanted cases are been created, we want to know what is the best way to stop cases getting created when we receive emails from certain email addresses.
we don't use 'Accept email from' feature in email-to case settings.
we don't have access to outlook exchange server to create any filters.
This kind of the scenario can be handled using validation rule.
When email-to-case occurs, you can capture Web Email Address and based on this create a validation rule to throw some dummy error message.
This error message is consumed internally and it doesn't go to Admin or that user's emailId as an email.
I have used this approach in my project and it served my purpose.
We created a custom meta-data type to store blocked domains and would add domains to the list when we started to receive spam. Then in your custom email handler you'd check the email against this list and if any entries are returned you simply don't create the case.
