error "403 forbidden", help

[Katana.S]

hi all.
I'm developing an ecommerce site with product geolocation.
i developed a PHP procedure which queries google maps for coordinates
from a given address.
Procedure worked well, then i put it into CRON table of the site
(which, actually, never start due to config error).
When i manually started it, i discovered that google is responding
with "403 forbidden" in the header, and no response content at all. If
i run same script from another server, it responds correctly.
I think site IP/domain has been blacklisted. But how i can know it?
How can i solve this situation?

here's the link with geocode test (only 1 time query, main procedure
is embedded into CMS so i cannot post):

http://www.soloaffittivacanze.it/test_geolocalizza_1.php

Thanks to all

[en4ce]

to use geocoding you MUST show a map, everything else is against the
TOS

[Katana.S]

> to use geocoding you MUST show a map, everything else is against the
> TOS

localization is for the iphone app, currently under development, it
will show on a map