We're using Dogtag pki-ca-1.0.0-1.fc8 as an Online CA to provide certificates in response to requests from a SLCS server. And the log file we're seeing on the SLCS server is saying: -- INFO [TP-Processor7] CertificateServlet.doProcess: CertificateSigningRequest= -----BEGIN CERTIFICATE REQUEST----- MIICTjCCAbcCAQAwgaExFDASBgoJkiaJk/IsZAEZFgRzbGNzMRQwEgYKCZImiZPy .. 9ChQYHcP8EpaseH8XymdH1bw -----END CERTIFICATE REQUEST----- INFO [TP-Processor7] CertificateServlet.doProcess: send certificate request to CA server ERROR [TP-Processor7] CMCConnection.checkResponseHeaders: Invalid Content-Type in HTTP response header: text/html -- So what we're thinking is that perhaps we are sending our request to the wrong URL .. viz: <CAUrl>https://slcscadev.vpac.org:9443/ca/ee/ca/</CAUrl> Does anyone have any ideas about this please? -- Graham Jenkins Australian Research Collaboration Service Victorian Partnership for Advanced Computing (+613) 9925-4862