Send all local mail to a single external e-mail

I am trying to send all local mail to a single external e-mail, using Google's SMTP servers.

Using Google's SMTP servers work, as I am able to send mail to external addresses work using mail from mailutils.

The redirection of local mail to the external e-mail does not work. When sending a mail to root from my account test using:

echo "Body" | mail -s "Test Postfix To Root" root

• I never recieve the message
• Nothing new turns up in /var/log/mail.err
• This turns up in /var/log/mail.log

Sep  4 18:48:06 desktop1204test postfix/pickup[5535]: C9326EE26: uid=1000 from=
Sep  4 18:48:06 desktop1204test postfix/cleanup[5702]: C9326EE26: message-id=
Sep  4 18:48:06 desktop1204test postfix/qmgr[5534]: C9326EE26: from=, size=401, nrcpt=1 (queue active)
Sep  4 18:48:06 desktop1204test postfix/local[5704]: C9326EE26: to=, orig_to=, relay=local, delay=0.03, delays=0.02/0/0/0, dsn=2.0.0, status=sent (delivered to mailbox)
Sep  4 18:48:06 desktop1204test postfix/qmgr[5534]: C9326EE26: removed

My /etc/postfix/main.cf:

inet_interfaces = loopback-only
mynetworks = loopback-only
alias_maps = hash:/etc/aliases
alias_database = hash:/etc/aliases
virtual_alias_domains = localhost.localdomain
virtual_alias_maps = hash:/etc/postfix/virtual
relayhost = [smtp.gmail.com]:587
smtp_sasl_auth_enable = yes
smtp_sasl_password_maps = hash:/etc/postfix/sasl_passwd
smtp_sasl_security_options = noanonymous
smtp_tls_CAfile = /etc/postfix/cacert.pem
smtp_use_tls = yes

My etc/aliases:

# See man 5 aliases for format
postmaster:    root

My /etc/postfix/virtual:

@localhost.localdomain        someone@somewhere.com

How can I get it working? I don't want any local mail to arrive locally, they should all go to someone@somewhere.com.

I tried the solution suggested in a comment below: put *: someone@somewhere.com in /etc/aliases. But did not work:

test@desktop1204test:~$ sudo newaliases
test@desktop1204test:~$ cat /etc/aliases
# See man 5 aliases for format
postmaster:    root
*: someone@somewhere.com
test@desktop1204test:~$ sudo newaliases 
test@desktop1204test:~$ sudo service postfix restart
 * Stopping Postfix Mail Transport Agent postfix                                                     [ OK ] 
 * Starting Postfix Mail Transport Agent postfix                                                     [ OK ] 
test@desktop1204test:~$ echo "Body" | mail -s "Test Postfix To Root $(date)" root
test@desktop1204test:~$ tail /var/log/mail.err 
test@desktop1204test:~$ tail /var/log/mail.log 
......
Sep  4 22:46:12 desktop1204test postfix/master[7224]: daemon started -- version 2.9.6, configuration /etc/postfix
Sep  4 22:46:23 desktop1204test postfix/pickup[7227]: 859AFF6A8: uid=1000 from=<test>
Sep  4 22:46:23 desktop1204test postfix/cleanup[7235]: 859AFF6A8: message-id=<20130904204623.859AFF6A8@desktop1204test.localdomain>
Sep  4 22:46:23 desktop1204test postfix/qmgr[7228]: 859AFF6A8: from=<test@desktop1204test.localdomain>, size=431, nrcpt=1 (queue active)
Sep  4 22:46:23 desktop1204test postfix/local[7237]: 859AFF6A8: to=<root@desktop1204test.localdomain>, orig_to=<root@desktop1204test>, relay=local, delay=0.02, delays=0.02/0/0/0, dsn=2.0.0, status=sent (delivered to mailbox)
Sep  4 22:46:23 desktop1204test postfix/qmgr[7228]: 859AFF6A8: removed
test@desktop1204test:~$