VACATION(1)

NAME
vacation - return ``I am not here'' indication

SYNOPSIS
vacation [-a alias] [-C cffile] [-d] [-f database] [-i] [-I] [-l] [-m message] [-r interval] [-s address] [-t time] [-U] [-x] [-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.

-C cfpath
    Specify pathname of the sendmail configuration file. This option is ignored if -U is specified. This option defaults to the standard sendmail configuration file, located at /etc/mail/sendmail.cf on most systems.

-d  Send error/debug messages to stdout instead of syslog. Otherwise, fatal errors, such as calling vacation with incorrect arguments, or with non-existent logins, are logged in the system log file, using syslog(8).

-f filename
    Use filename as name of the database instead of ~/.vacation.db or ~/.vacation.{dir,pag}. Unless the filename starts with / it is relative to ~.

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

-I  Same as -i (for backwards compatibility).

-m filename
    Use filename as name of the file containing the message to send instead of ~/.vacation.msg. Unless the filename starts with / it is relative to ~.

-l  List the content of the vacation database file including the address and the associated time of the last auto-response to that address.

-r interval
    Set the reply interval to interval days. The default is one week. An interval of ``0'' or ``infinite'' (actually, any non-numeric character) will never send more than one reply.

-s address
    Use address instead of the incoming message sender address on the From line as the recipient for the vacation message.

-t time
    Ignored, available only for compatibility with Sun's vacation program.

-U  Do not attempt to lookup login in the password file. The -f and -m options must be used to specify the database and message file since there is no home directory for the default settings for these options.

-x  reads an exclusion list from stdin (one address per line). Mails coming from an address in this exclusion list won't get a reply by vacation. It is possible to exclude complete domains by specifying ``@domain'' as element of the exclusion list.

-z  Set the sender of the vacation message to ``<>'' instead of the user. This probably violates the RFCs since vacation messages are not required by a standards-track RFC to have a null reverse-path.

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'', ``???-RELAY'', ``???-OWNER'', ``OWNER-???'', ``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'' or ``Precedence: junk'' line is included in the mail headers. The people who have sent you messages are maintained as a db(3) or dbm(3) database in the file .vacation.db or .vacation.{dir,pag} 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

Vacation reads the first line from the standard input for a UNIX ``From'' line to determine the sender. Sendmail(8) includes this ``From'' line automatically.

FILES

~/.vacation.db
    default database file for db(3)

~/.vacation.{dir,pag}
    default database file for dbm(3)

~/.vacation.msg
    default message to send

SEE ALSO
sendmail(8), syslog(8)

HISTORY
The vacation command appeared in 4.3BSD.