The Little Macquarie Dictionary defines the word communicate as "1. to give to another as a partaker; impart; transmit. 2. to make known. 3. to have an interchange of thoughts."
Of these three entries only the third entry implies that communication is more than the act of just imparting information. Were we to ignore the receiver, how would we know they ascribed a meaning to the message that was consistent with that intended? How are we to communicate meaningfully if we do not acknowledge the interpretation of and response to the original message?