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
The username must be available via getpwnam(3).
Messages are appended to the file specified by the full pathname (starting with a
A command starts with a pipe symbol (|), it receives messages via standard input.
The aliases in pathname are added to the aliases for name.
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)