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http://jigsaw.w3.org/css-validator/validator?text=a{color:red}&output=soap12 HTTP/1.1 200 OK Cache-Control: no-cache Connection: close Date: Fri, 28 May 2004 00:19:54 GMT Pragma: no-cache Content-Length: 759 Content-Language: en Content-Type: text/plain Server: Jigsaw/2.2.4 it should be a SOAP or XML MIME type.
Now using application/soap+xml (as it is SOAP 1.2). (text/plain was a leftover of the debug mode)