---
name: "newaliases"
section: "1"
platform: "freebsd"
package: "base"
version: "16.0-CURRENT-20261027-61c70dc16a79"
release: "FreeBSD 16.0-CURRENT (2026-10-27)"
platforms: ["linux", "freebsd", "macos"]
url: "https://new.carta.tech/newaliases"
---

# newaliases(1)

rebuild the data base for the sendmail aliases file

## NAME

newaliases - rebuild the data base for the sendmail aliases file

## SYNOPSIS

**newaliases**

## DESCRIPTION

**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''.

The **newaliases** utility exits 0 on success, and \>0 if an error occurs.

Notice: do **not** use **makemap** to create the aliases data base, because **newaliases** puts a special token into the data base that is required by **sendmail.**

## FILES

- /etc/mail/aliases

  The mail aliases file

## SEE ALSO

[aliases(5)](/aliases/5.md), [sendmail(8)](/sendmail/8.md)

## HISTORY

The **newaliases** command appeared in 4.0BSD.