NEWALIASES(8) BSD System Manager's Manual NEWALIASES(8)
newaliases - rebuild the data base for the mail aliases file
newaliases
newaliases rebuilds the random access data base for the mail aliases file /etc/mail/aliases. It must be run each time this file is changed in order for the change to take effect. newaliases is identical to "sendmail -bi". Notice: do not use makemap(8) to create the aliases data base, because newaliases puts a special token into the data base that is required by sendmail(8).
/etc/mail/aliases The mail aliases file
The newaliases utility exits 0 on success, and >0 if an error occurs.
aliases(5), mailer.conf(5), makemap(8), sendmail(8)
The newaliases command appeared in 4.0BSD. MirBSD #10-current June 9, 2014 1