XI adapter MLS

Hi,

I am try to configure the MLS for XI adapter according to the document. When doing a testing it give me this error.

- http://sap.com/xi/XI/Message/30" xmlns:SOAP=" http://schemas.xmlsoap.org/soap/envelope/" SOAP:mustUnderstand="">

<SAP:Category>XIServer</SAP:Category>

<SAP:Code area="SECURITY">SECURITY_APPLY_ERROR</SAP:Code>

<SAP:P1>Sign and Encrypt Message</SAP:P1>

<SAP:P2 />

<SAP:P3 />

<SAP:P4 />

<SAP:AdditionalText>Communication error SRT: Processing error in Internet Communication Framework: (&quot;ICF Error when receiving the response:HTTP COMMUNICATION FAILURE&quot;)</SAP:AdditionalText>

<SAP:ApplicationFaultMessage namespace="" />

<SAP:Stack>Error during message security handling in outbound channel: Security profile 'Sign and Encrypt Message'</SAP:Stack>

<SAP:Retry>M</SAP:Retry>

</SAP:Error>

Any idea?

Thanks