I am on a new install v2.3.3. I have been switched to production server by usps. The usps module has been installed and user ids and passwords have been entered. I have also installed a guest checkout add on that works fine. I get the following message at checkout.
Warning: fsockopen() [function.fsockopen]: unable to connect to stg-secure.shippingapis.com:80 (Connection refused) in /home/a4839188/public_html/catalog/includes/classes/http_client.php on line 330
The file that is unedited v2.3.3. I also get the standard "An error occured with the USPS shipping calculations. If you prefer to use USPS as your shipping method, please contact the store owner."
Any help would be greatly appreciated.
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USPS Rate V4, Intl Rate V2 (official support thread)