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ALIASES(5)									       ALIASES(5)

       aliases - aliases file for sendmail


       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

	      The username must be available via getpwnam(3).

       Local Filename

	      Messages are appended to the file specified by the full pathname (starting  with	a
	      slash (/))


	      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

	      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.

       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

       newaliases(1), dbm(3), dbopen(3), db_open(3), sendmail(8)

       SENDMAIL Installation and Operation Guide.

       SENDMAIL An Internetwork Mail Router.

       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.

       The aliases file format appeared in 4.0BSD.

				   $Date: 2000/12/14 23:09:46 $ 		       ALIASES(5)
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