rebuild the database for the mail aliases file
newaliases
None.
The newaliases utility rebuilds the random access database for the mail aliases file (/etc/aliases). The utility must be run each time this file is changed in order for the change to take effect.
Note that newaliases is identical to the command:
sendmail -bi
The newaliases utility exits 0 on success, >0 if an error occurs.
/etc/aliases file,
sendmail
Sendmail by Bryan Costales, O'Reilly & Associates (ISBN 1-56592-056-2)