[polera]

You should be able to verify your alias_maps setting with:

# postconf alias_maps

That will return something along the lines of

# alias_maps = hash:/etc/aliases

Make sure that's the file that your aliases are configured in. Then run:

# newaliases
          # postfix reload

That should do it for you.

If the above doesn't work, you might try aliasing root to a local user:

root:  philip

Works for me on FreeBSD 8.0-RELEASE