dcc
vipul
spamAssassin
+ vacation
target.
dead -- drops the message on the floor; it vanishes without a trace
dir[path] -- uses the directory [path] as a naive file-based storage area
send -- sends the outgoing message via smtp
bounce(message) -- bounces the message
- vacation
darcs(repo)
procmail(procmailrc)
lmtp(path)