Spf Problem with DRAC?

        Hello.

        I'm testing SPF with an existing Sendmail and DRAC (a 
pop-before-smtp solution). The Sendmail+DRAC had been working for three 
years in our servers with dynamic clients (IPs), now I have added the SPF 
functionality.
        The problem is the SPF returns a softfail (for our domains hosted 
in our mailserver, where I have added the SPF support), although the client 
authenticates with DRAC. I know the DRAC authentication works because if a 
client does not authenticate (does not make a successful pop attempt), it 
receives a "relaying denied" message, and when it is authenticated it can 
send email to foreign domains.
        What can I do?

        Thanks.