close passwd file before setuid() "just in case"

avoid MIMEing RFC1049 messages

make a bunch of #defines into 0/1 instead of ifdef/ifndef

fix possible null pointer dereference

allow symbolic service names on [IPC] mailers

better handling of dead.letter -- involves mailfile changes

lint

force *file* mailer to have setuid bit semantics even when a program

file mailer should run as default uid, not as sender

put MIME 8->7 bit conversions on a compile flag (default on for now)

add "E" line to config file to set or propogate environment
variables to children

make file mailer semantics switch off of P=[FILE]

efficiency improvements

updates for new DSN drafts

better use of extended DSN status codes

improved DSN status codes

update copyright notice

add Nice=N mailer option

merge a bit with Sun version

more type hacking for non-Posix/ANSI systems

pull getpwXXX and gethostbyXXX calls out into conf.c so they can
be tweaked

fix another problem with improperly trashed e_lockfp on vfork

don't propogate RET or NOTIFY parameters down through mailing lists

avoid running out of file descriptors problem on vfork systems

more cleanup for DSN drafts