vacation[options]
Automatically return a mail message to sender announcing that you are on vacation. To disable this feature, type mail -F "".
Append the date to logfile.
userForward mail to user when unable to send mail to mailfile.
logfileRecord in logfile the names of senders who received an automated
reply (default is $HOME/.maillog).
mailfileSave received messages in mailfile (default is $HOME/.mailfile).
msg_fileUse msg_file as the reply to mail automatically (default is /usr/lib/mail/std_vac_msg).