AUP#CXSNDR what does this mean?

have been trying to forward something sent to me by a friend and it looks like its sending...then an error message appears and it ends with this.  i googled it and a thread comes up on here, but it won't take to any of the links so i can't read it. that thread implied cox is censoring something in it.  but that same cox let it come to me?  although, thinking about it...it wouldn't surprise me.  nothing they do surprises me any more. does anybody know what i'm doing wrong?