Delete multiple addresses from spam whitelist

Delete multiple addresses from spam whitelist

When I checked my spam whitelist I found it contains hundreds of unwanted entries. There are a few genuine contacts but most look very spammy. I have no idea how they got there. Something has added them without my knowledge.

I'm trying to delete them but it is extremely slow. I deleted a few individually, But using the check boxes for multiple deletes didn't work. I just get a message saying 'Sorry we are unable to process your request'. There seems to be some sort of rate-limiting which slows down the deletion process.

This is going to take forever. Can you please explain how to clean up the list quickly.