Getting "401 Unauthorized" status code while calling SSRS 2008

Hi,

I am getting this response while calling report server service hosted in other machine where as i got success response if i call SSRS sever hosted in my local:

This is the code i am using:

<cfset str = "/test/Report1"/>

<cfsavecontent variable="soapvar" >

    <cfoutput>

        <soap:Envelope xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/"

       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

       xmlns:xsd="http://www.w3.org/2001/XMLSchema">

        <soap:Body>

            <DeleteItem xmlns="http://www.microsoft.com/sql/ReportingServer">

                <item>#str#</item>

            </DeleteItem>

        </soap:Body>

    </soap:Envelope>

    </cfoutput>

</cfsavecontent>

<cfhttp

    url="http://192.168.10.251/reportserver/reportexecution2005.asmx"

    method="post"

    result="httpResponse"

    username="Domain_name\username"

    password="password"

    getasbinary="yes">

    <cfhttpparam

        type="xml"

        value="#trim( soapvar )#"/>

</cfhttp>   

<cfdump var="#httpResponse#">

Same code is working fine whem i call SSRS server in my local