The orig address in the packed msg header is (and still is) the proper
local system address (this may be correct behavior, still checking), but
no INTL control line (FSC-0004) was added, so the packed message header
ends up defining the originating system address. So, now we include an
INTL control line in packed netmail messages which reflects the actual
origin address of the message. Thanks to Nigel Reed for helping to identify
and test this problem over the past week or so.