NAME

     vacation — return “I am not here” indication

SYNOPSIS

     vacation -i [-r interval]
     vacation -l
     vacation -x
     vacation [-a alias] [-c ccaddr] [-d] [-f db] [-m msg] [-j] [-z] login

DESCRIPTION

     vacation returns a message to the sender of a message telling them that you are currently
     not reading your mail.  The intended use is in a .forward file.  For example, your .forward
     file might have:

           \eric, "|/usr/bin/vacation -a allman eric"

     which would send messages to you (assuming your login name was eric) and reply to any
     messages for “eric” or “allman”.

     Available options:

     -a alias
             Handle messages for alias in the same manner as those received for the user's login
             name. Using -a alias multiple times is possible.

     -c ccaddr
             Copy the vacation messages to ccaddr.

     -d      Print messages to stderr instead of syslog.

     -f db   Uses db as the database file.

     -m msg  Uses msg as the message file.

     -j      Reply to the message even if our address cannot be found in the “To:” or “Cc:”
             headers.  This option is very dangerous and should be used with extreme care.

     -z      Set the envelope sender of the reply message to “<>”.

     -i      Initialize the vacation database files.  It should be used before you modify your
             .forward file.

     -r      Set the reply interval to interval days.  The default is one week.  An interval of
             “0” means that a reply is sent to each message, and an interval of “infinite”
             (actually, any non-numeric character) will never send more than one reply.  It
             should be noted that intervals of “0” are quite dangerous, as it allows mailers to
             get into “I am on vacation” loops.

     -x      Reads a list of addresses from standard input, one per line, and adds them to the
             vacation database.  Mail coming from these excluded addresses will not get a reply.
             Whole domains can be excluded using the syntax “@domain”.

     -l      Print the contents of the vacation database files.  For each entry, the address the
             reply has been sent to and the associated time will be printed to standard output.

     When started without arguments, vacation will guide the user through the configuration
     process.

     No message will be sent unless login (or an alias supplied using the -a option) is part of
     either the “To:” or “Cc:” headers of the mail.  No messages from “???-REQUEST”,
     “Postmaster”, “UUCP”, “MAILER”, or “MAILER-DAEMON” will be replied to (where these strings
     are case insensitive) nor is a notification sent if a “Precedence: bulk”, “Precedence:
     list”, “Precedence: junk”, “X-Spam-Flag: yes” or “Auto-submitted: (something other than no)”
     line is included in the mail headers.  The people who have sent you messages are maintained
     as a db(3) database in the file .vacation.db in your home directory.

     vacation expects a file .vacation.msg, in your home directory, containing a message to be
     sent back to each sender.  It should be an entire message (including headers).  For example,
     it might contain:

           From: eric@CS.Berkeley.EDU (Eric Allman)
           Subject: I am on vacation
           Delivered-By-The-Graces-Of: The Vacation program
           Precedence: bulk

           I am on vacation until July 22.  If you have something urgent,
           please contact Keith Bostic <bostic@CS.Berkeley.EDU>.
           --eric

     Any occurrence of the string $SUBJECT in .vacation.msg will be replaced by the subject of
     the message that triggered the vacation program.

     vacation reads the incoming message from standard input, checking the message headers for
     either the UNIX “From” line or a “Return-Path” header to determine the sender.  If both are
     present the sender from the “Return-Path” header is used.  Sendmail(8) includes this “From”
     line automatically.

     Fatal errors, such as calling vacation with incorrect arguments, or with non-existent
     logins, are logged on the standard error output and in the system log file, using syslog(3).

DIAGNOSTICS

     The vacation utility exits 0 on success, and >0 if an error occurs.

FILES

     ~/.vacation.db   database file
     ~/.vacation.msg  message to send
     ~/.forward

SEE ALSO

     aliases(5), sendmail(8), syslogd(8)

HISTORY

     The vacation command appeared in 4.3BSD.

AUTHOR

     vacation was developed by Eric Allman and the University of California, Berkeley in 1983.
     This version is maintained by Marco d'Itri <md@linux.it> and contains code taken from the
     three free BSD and some patches applied to a linux port.