USPS Integrator: what URL do I use for the Server property?

What URL do I use for the Server property of the USPS Integrator components?

Date Entered: 06/18/2007    Last Updated: 06/18/2007

There are two different live and test Urls that have been provided by the US Postal service for use with the Webtools APIs (and these components). There is one plain-text URL and one SSL-secured url for both live and testing. These URLs are listed below, along with the components that use them.

Live Servers:

For these components: AddressInfo, DomesticRates, InternationalRates, ShippingTime, and TrackAndConfirm
use: http://production.shippingapis.com/ShippingAPI.dll

For these components: CarrierPickup, ConfirmationLabels, CustomsLabels, ExpressLabels, InternationalLabels, and ReturnLabels
use: https://secure.shippingapis.com/ShippingAPI.dll

Test Servers:

For these components: AddressInfo, DomesticRates, InternationalRates, ShippingTime, and TrackAndConfirm
use: http://testing.shippingapis.com/ShippingAPITest.dll

For CarrierPickup
use: https://secure.shippingapis.com/ShippingAPITest.dll

These test servers return CANNED RESPONSES. They will only accept a specific set of data, and will only return one pre-formed response. Any transaction that does not contain the exact data they expect will cause an error to be generated. Because of these limitations we strongly recommend you test using a live account.

Note that the label components must use the live server for testing, but with the Certify configuration setting set to True.


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