aliases - aliases file for sendmail
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 effect.
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.