fatal: open database /etc/aliases.db

On a new postfix mail server installation, i got following error on console

Jul 11 19:19:32 freebsd postfix/local[654]: fatal: open database /etc/aliases.db: No such file or directory

The error is because postfix can't find "/etc/aliases.db". Problem is fixed with by recreating aliases.db file.

# postfix stop
# rm -f /etc/aliases.db
# newaliases
# postfix start

Now postfix working fine.