smtpd_recipient_restrictions =
    permit_mynetworks,
    permit_sasl_authenticated,
    reject_non_fqdn_sender,
    reject_non_fqdn_recipient,
    reject_unauth_destination,
    reject_unauth_pipelining,
    reject_invalid_hostname,
    check_policy_service unix:private/policy-spf
    check_sender_access mysql:/etc/postfix/mysql_sender_checks.cf
    reject_rbl_client zen.spamhaus.org,
    reject_rbl_client bl.spamcop.net,
    reject_rbl_client cbl.abuseat.org,
    reject_rbl_client dnsbl.sorbs.net

Mar 29 13:15:51 policyd-spf[6442]: Pass; identity=mailfrom; client-ip=69.171.232.144; helo=mx-out.facebook.com; envelope-from=REDACTED; receiver=REDACTED
Mar 29 13:15:51 postfix/smtpd[5971]: NOQUEUE: reject: RCPT from 69-171-232-144.outmail.facebook.com[69.171.232.144]: 554 5.7.1 Service unavailable; Client host [69.171.232.144] blocked using dnsbl.sorbs.net; Currently Sending Spam See: http://www.sorbs.net/lookup.shtml?69.171.232.144; from=<REDACTED> to=<REDACTED> proto=ESMTP helo=<mx-out.facebook.com>

Debian GNU/Linux 7
Linux XXXXX 3.2.0-4-amd64 #1 SMP Debian 3.2.82-1 x86_64 GNU/Linux
Postfix 2.9.6-2
postfix-policyd-spf-python 1.0.2