`alias_database`

This parameter specifies the alias database(s) that are built with "newaliases" or "sendmail -bi". This is a separate configuration parameter, because `alias_maps` may specify tables that are not necessarily all under control by Postfix.

Typical configurations are:

- `dbm:/etc/aliases`
- `dbm:/etc/mail/aliases`
- `hash:/etc/aliases`
- `hash:/etc/aliases, hash:/opt/majordomo/aliases`