Vacation

User can activate a vacation message while they are gone. To activate a vacation message:

• Make sure that a user has updated $HOME/.procmailrc.
• If not, you must use the INCLUDERC directive
  :0 { INCLUDERC=/etc/procmailrcs/vacation.rc }
• Have a $HOME/.vacation.msg file with a vacation message.

To deactivate the vacation message:

• Remove/move the $HOME/.vacation.msg file.
• Clean up $HOME/.vacation.cache.