Thought this would be the most suitable location for this topic. I was just curious if it is possible to block iMessage over WiFi. If there is a specific port that can be blocked, or not. I believe this has to be possible because I know schools in my region, as well as public WiFi networks (that I am at) don't always send my iMessages. I am running DDWRT on my router. I tried blocking this port listed here http://support.apple.com/kb/ht4245 but it didn't seem to work.