Postfix Sender Restrictions - policy service only for SASL users

[Elaconta.com Webmaster]

Hello

I currently have the following configuration on the main.cf 
smtpd_sender_restrictions:

smtpd_sender_restrictions = permit_mynetworks,
                               reject_non_fqdn_sender,
                               reject_unknown_sender_domain,
                               reject_authenticated_sender_login_mismatch,
                               check_policy_service inet:127.0.0.1:10031,
                               permit_sasl_authenticated

I have a Policy Server running on port 10031 (Cluebringer) to count 
emails sent per domain in order to avoid users from overriding their 
sent email quota.
However, this check is running on all emails sent from the server.
Is there any way i can change the sender restrictions so that the 
policyd service is only applied to SASL authenticated users and lower 
CPU usage?

Thanks in advance,

Luis Oliveira
Elaconta