I realize this is probably a dumb question, I manage several domains somewhere on the order of 50. and I realized that I am getting bounces for address that do not exist on my domain. Email addresses like Postmaster@ or Abuse@ or NOC@ and I was wondering what addresses are assumed to exist on my domains and which ones are required. I have done some research and determined that there is some documentation out there that determines what is required, something like an RFC document. But I didn't Know exactly where to look. Any suggestions welcomed Thanks Steven Lamb