multiple vhost and redirect problem

[jeff emminger]

I have two sites, site-a and site-a-test.  site-a will redirect
requests on port 80 to 443, but site-a-test only accepts requests on
80.  the following setup is working flawlessly on one machine:

# site-a.conf:
server {
    listen 80;
    server_name site-a.us;
    rewrite ^/(.*) https://site-a.us/$1 permanent;
    ...
}

server {
    listen    443;
    server_name  site-a.us;
    ...
}

# site-a-test.conf:
server {
    listen 80;
    server_name site-a-test.us;
    ...
}

My problem is that this identical conf on another machine (both
running 0.6.31) will only allow me to reach site-a... any request to
site-a-test is also being redirected to https://site-a.us/

Any ideas?
-Jeff