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aliases - aliases file for sendmail

 

NAME

        aliases - aliases file for sendmail
 

SYNOPSIS

        aliases
 

DESCRIPTION

        This file describes user ID aliases used by sendmail.  The file resides
        in /etc/mail and is formatted as a series of lines of the form
 
               name: addr_1, addr_2, addr_3, . . .
 
        The name is the name to alias, and the addr_n are the aliases for  that
        name.  addr_n can be another alias, a local username, a local filename,
        a command, an include file, or an external address.
 
        Local Username
               username
 
               The username must be available via getpwnam(3).
 
        Local Filename
               /path/name
 
               Messages are appended to the file specified by the full pathname
               (starting with a slash (/))
 
        Command
               |command
 
               A  command  starts  with a pipe symbol (|), it receives messages
               via standard input.
 
        Include File
               :include: /path/name
 
               The aliases in pathname are added to the aliases for name.
 
        E-Mail Address
               user@domain
 
               An e-mail address in RFC 822 format.
 
        Lines beginning with white space are continuation lines.   Another  way
        to  continue lines is by placing a backslash directly before a newline.
        Lines beginning with # are comments.
 
        Aliasing occurs only on local names.  Loops can  not  occur,  since  no
        message will be sent to any person more than once.
 
        If  an  alias  is found for name, sendmail then checks for an alias for
        owner-name.  If it is found and the result of the lookup expands  to  a
        single address, the envelope sender address of the message is rewritten
        to that address.  If it is found and the result expands  to  more  than
        one address, the envelope sender address is changed to owner-name.
 
        After  aliasing  has  been  done, local and valid recipients who have a
        ‘‘.forward’’ file in their home directory have  messages  forwarded  to
        the list of users defined in that file.
 
        This  is  only  the  raw  data file; the actual aliasing information is
        placed into a binary format in the file /etc/mail/aliases.db using  the
        program  newaliases(1).   A  newaliases command should be executed each
        time the aliases file is changed for the change to take effect.
        newaliases(1), dbm(3), dbopen(3), db_open(3), sendmail(8)
 
        SENDMAIL Installation and Operation Guide.
 
        SENDMAIL An Internetwork Mail Router.
 

BUGS

        If you have compiled sendmail with DBM support instead  of  NEWDB,  you
        may  have  encountered problems in dbm(3) restricting a single alias to
        about 1000 bytes  of  information.   You  can  get  longer  aliases  by
        ‘‘chaining’’;  that is, make the last name in the alias be a dummy name
        which is a continuation alias.
 

HISTORY

        The aliases file format appeared in 4.0BSD.
 
                          $Date: 2004/07/12 05:39:21 $               ALIASES(5)
 

Sections

Based on BSD UNIX
FreeBSD is an advanced operating system for x86 compatible (including Pentium and Athlon), amd64 compatible (including Opteron, Athlon64, and EM64T), UltraSPARC, IA-64, PC-98 and ARM architectures. It is derived from BSD, the version of UNIX developed at the University of California, Berkeley. It is developed and maintained by a large team of individuals. Additional platforms are in various stages of development.