Rosenbaum, Larry M. a écrit : >>Hmmm.... Perhaps the protocol could had a mechanism added so that the >>server could tell if it is talking to a peer (another MTA) or a client >>(an MUA). > > > There is such a mechanism in RFC-2476, but I don't know how many MUAs > and MTAs support it. >
all MTAs and MUAs that use smtp support it naturally (message submission is based on smtp). now you can run diffrenet instances/listeners on your system with different configurations (for instance, you could decide that submission over the network [port 587] requires authentication, and configure port 25 as a "public" MX, ...).
