how do I block spam instant messages from email addresses?
I get spam from a Chinese site 163.com - apparently from randomly-generated email addresses. I want to block the entire domain if possible. Can I put in a wild card or something to block these messages? And how are they sending them to me - using a telephonenumber@carrier.net kind of an I.D. or what? I've blocked over 20 individual senders so far but I can see this is going to continue to grow.
iOS 7.1, iPhone and iPad and Mac