Sometimes
it is desirable to have vacation mail resemble
bounced email. One way to accomplish this is to use the
-z command-line switch. That switch causes the
vacation message to appear to come from the
special user "<>" instead of
from you. At the original sender's end, the message
will likely appear to come from MAILER-DAEMON or something similar:
From MAILER-DAEMON@your.domain Sat Jan 1 19:56:21 2000
As a side effect, the vacation reply will also
have this header added:
X-Authentication-Warning: local.domain: you set sender to <> using -f
This -z command-line switch is useful if your
vacation messages generate significant bounced
mail. This could be the case if you get lots of spam email, for
example. Using this -z command-line switch will
prevent vacation messages to those bad reply
addresses from bouncing:
|"/usr/ucb/vacation -z you"
