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Successful payment on WorldPay gives message 'the gateway refused the transaction'
Question
When I go off to WorldPay, I make a payment successfully but then get a message saying 'the gateway refused the transaction'.
The callback appears to fail in that the order does not show up under 'most recent', and no email confirmation from CactuShop is sent.
Answer
This suggests that the worldpay_callback.asp script has failed. There are a number of possible reasons for this, but the most common is related to email.
The callback script is the point where CactuShop sends a confirmation mail to the customer. If your chosen mail component (emailmethod config setting) is not correctly installed, or your SMTP server is badly configured, this can generate an error whenever CactuShop tries to send mail.
Verify that your store can send mail ok. Simply sign up for the newsletter and see if you get a confirmation mail, or see any on screen errors relating to the mail component.