worldpay callback failure

hi

i am trying to make worldpay callback work from last 2 days, but still getting worldpay callback failure email. my callback url ishttp://asd/cb.aspx. and in my page i am simply printing the message

like this. response.write("testing")

please help me if someone has done it before.

cheers

My guess is that the url is not reachable from outside. It is obviously a local uri. You should set up your webserver and firewalls so that cb.aspx can be reached from the outside (eg. from worldpay's servers).

Check what they (worldpay) write on their website:

If you have enabled callbacks theCallback URL you have entered must be correct and your server must be working properly and sending back an appropriate response. If there is any problem with the callback process you will receive an email describing the fault. (http://support.worldpay.com/kb/reference/faqs/callback_faqs.html#callback_failure)

Hope this points you in right direction