I've read and tried to follow the Blocking Senders info several times but still having problems adding additional emails/domains to the list. I was able to setup the "Block List" filter as instructed with the first email but every time I try to add another sender, it tells me the list already exists and I need to create a new one. I have tried clicking the "+" to add an exception but it just gives me a blank domain name. I tried copying the email/domain to the new exception line but it still keeps telling me that filter already exists and create a new one. The instructions seem to leave out a step or two.