Is it possible to write a config like this?

server {
server_name www.example.com;
location / {
...
}
}

server {
server_name www.example.com;
listen 143;
ssl on;
ssl_certificate example.crt;
ssl_certificate_key example.key;
}

That means I can config one domain with two separated server blocks. This feature is handy thus I can write a config auto-gen script.

Thanks.