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    <title>topic Re: Problem when processing credit card payment on test gateway. in Integration and Testing</title>
    <link>https://community.developer.cybersource.com/t5/Integration-and-Testing/Problem-when-processing-credit-card-payment-on-test-gateway/m-p/17534#M9790</link>
    <description>&lt;P&gt;This error probably indicates that your external server isn't up to date on root SSL certificates.&amp;nbsp; You'll want to talk to the server administrator to make sure that they can recognize the certificates on Authorize.Net.&lt;/P&gt;</description>
    <pubDate>Fri, 30 Sep 2011 22:25:09 GMT</pubDate>
    <dc:creator>Trevor</dc:creator>
    <dc:date>2011-09-30T22:25:09Z</dc:date>
    <item>
      <title>Problem when processing credit card payment on test gateway.</title>
      <link>https://community.developer.cybersource.com/t5/Integration-and-Testing/Problem-when-processing-credit-card-payment-on-test-gateway/m-p/17470#M9760</link>
      <description>&lt;P&gt;I have implemented the AIM using VB.net.&amp;nbsp; I am testing on local host&amp;nbsp; (x_test_request = false and URL = &lt;A target="_blank" href="https://test.authorize.net/gateway/transact.dll)"&gt;https://test.authorize.net/gateway/transact.dll)&lt;/A&gt; opening the page with HTTP and everything works well when I process a credit card payment (using Net.HttpWebRequest).&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;The problem comes when I try to do the same from my external server.&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;I get the following exertion:&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;System.Net.WebException: The underlying connection was closed: Could not establish trust relationship for the SSL/TLS secure channel. ---&amp;gt; System.Security.Authentication.AuthenticationException: The remote certificate is invalid according to the validation procedure……….&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;I am using self-signed certificate, I have opened the page with HTTP and HTTPS and still get the same exception.&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;Why does it work on local host and not on external server?&amp;nbsp;&lt;/P&gt;&lt;P&gt;Does authorize.net allow self-signed certificate when testing?&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;Any help is much appreciated.&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;Thanks&lt;/P&gt;</description>
      <pubDate>Thu, 29 Sep 2011 17:40:52 GMT</pubDate>
      <guid>https://community.developer.cybersource.com/t5/Integration-and-Testing/Problem-when-processing-credit-card-payment-on-test-gateway/m-p/17470#M9760</guid>
      <dc:creator>Babyface</dc:creator>
      <dc:date>2011-09-29T17:40:52Z</dc:date>
    </item>
    <item>
      <title>Re: Problem when processing credit card payment on test gateway.</title>
      <link>https://community.developer.cybersource.com/t5/Integration-and-Testing/Problem-when-processing-credit-card-payment-on-test-gateway/m-p/17534#M9790</link>
      <description>&lt;P&gt;This error probably indicates that your external server isn't up to date on root SSL certificates.&amp;nbsp; You'll want to talk to the server administrator to make sure that they can recognize the certificates on Authorize.Net.&lt;/P&gt;</description>
      <pubDate>Fri, 30 Sep 2011 22:25:09 GMT</pubDate>
      <guid>https://community.developer.cybersource.com/t5/Integration-and-Testing/Problem-when-processing-credit-card-payment-on-test-gateway/m-p/17534#M9790</guid>
      <dc:creator>Trevor</dc:creator>
      <dc:date>2011-09-30T22:25:09Z</dc:date>
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