consolidate the two data_post methods into one (more linear, simpler)
more informative log message
add new headers to top of headers (not bottom (consistent MTA behavior))
append optional log_mess to log entry (more description)
subsequent attempts to set naughty don't overwrite the first
set the naughty rejection type to be the reject type of the plugin that marked the connection naughty
get_reject_type can be passed an explicit default
