Lines of README from check-in 9a76ed5387 that are changed by the sequence of edits moving toward check-in e66352b9cc:

                         1: First of all make sure to never listen on public IPs and always put sockets in
                         2: directories not acessible by just about everyone on your system. Though
                         3: listening on 127.0.0.1:XXXX is equivalent to creating a world-writable socket.
                         4: 
                         5: To catch bounces (so they wouldn't stuck in upper mail server) make sure sender
                         6: envelope address is real as required by mail library (actually not sure whether
                         7: this applies to mailin). For example Postfix has to be tweaked like this:
                         8: 
                         9: $config_directory/main.cf:
                        10: 	smtp_generic_maps = hash:$config_directory/generic
                        11: 
                        12: $config_directory/generic:
                        13: 	""	postmaster@example.com
                        14: 	<>	postmaster@example.com
                        15: 
                        16: Actually not sure which one works...