policy daemon to greylist on SPF failure?

[Justin Piszcz]

Was curious if there were any daemons out there that currently did this, or if 
I should just modify the main spf checking script that openspf.org provides?

Nov 19 13:32:39 p34 postfix/policy-spf[15114]: : SPF SoftFail (Mechanism '~all' 
matched): Envelope-from: [EMAIL PROTECTED] Nov 19 13:32:39 p34 
postfix/policy-spf[15114]: handler sender_policy_framework: is decisive. Nov 19 
13:32:39 p34 postfix/policy-spf[15114]: : Policy action=PREPEND Received-SPF: 
softfail (hsbc.co.uk: Sender is not authorized by default to use 
'[EMAIL PROTECTED]' in 'mfrom' identity, however domain is not currently 
prepared for false failures (mechanism '~all' matched)) 
receiver=p34.internal.lan; identity=mfrom; envelope-from="[EMAIL PROTECTED]"; 
helo=158550.arbollogico.net; client-ip=67.192.171.186