procmail vacation messages

[Michael L Torrie]

I know that vacation (out-of-office replies) have fallen out of favor
these days, but I have a user that wants to set one.  Back in the olden
days /usr/bin/vacation was just a part of the system.  Now it doesn't
seem to be available.  What solutions do you recommend for implementing
a vacation message that works with procmail?  Any suggestions are
appreciated.

thanks.

Michael