When I try to respond to a question (to Windows Answers), my email is rejected by the Postmaster. Why?

Several weeks ago, I posted a question regarding inability to print some (not all) emails. I have had several replies, mostly requesting further information. Each time i have attempted to provide a better explanation, my email has been rejected by the "Postmaster" even though I have utilized the link provided (to "Windows Answers". ) Extremely frustrating, to say the least, in that some of the responses have been quite lengthy. Why does this happen? And more important, how do I get my message back past the postmaster?