Postback from ecommerce site not working

[Bill]

I am trying to setup a postback from an ecommerce merchant service
that does a postback from their order form using the POST method. I
gave them the url, which is a code behind page on my site (asp.net
2.0, c#) and in the page_load event I am currently just writing a a
single line with "test" to a text file just to see if anything hits
the page, but nothing does. since my website is hosted by a hosting
company, I have no control over either server. How can I diagnose the
problem? Is there some configuration issue I need to address?

I test the code behind page on my developement machine by doing a
submit from one page to the target page and it works.

Bill

 

[Peter K]

What did your hosting company's technical support department tell you when
you contacted them and explained the problem that you're having?

Hint: "I haven't contacted my hosting company's technical support
department" is the wrong answer...

Quite!

I have tested a couple of "payment services" which also offered "postback"
functionality. They had test setups one could use - in fact they demanded
that I use them and prove that my site was working correctly with respect to
their services.

To the OP: does the "ecommerce merchant service" have a test setup. These
sorts of businesses are usually quite eager to help, and in the first
instance I'd get them to post back to a url I hosted myself (easier to test
and debug).