aliases - phpMan

ALIASES(5)                                                          ALIASES(5)



NAME
       aliases - aliases file for sendmail

SYNOPSIS
       aliases

DESCRIPTION
       This file describes user ID aliases used by sendmail.  The file resides in /etc 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  enve-
       lope  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/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.

SEE ALSO
       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)

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