>>> host in hosts_connection_nolog? no (option unset)
>>> host in host_lookup? no (option unset)
>>> host in host_reject_connection? no (option unset)
>>> host in sender_unqualified_hosts? no (option unset)
>>> host in recipient_unqualified_hosts? no (option unset)
>>> host in helo_verify_hosts? no (option unset)
>>> host in helo_try_verify_hosts? no (option unset)
>>> host in helo_accept_junk_hosts? no (option unset)
>>> using ACL "check_recipient"
>>> processing "deny"
>>> check senders = testdb;defer
>>> userx@somehost.example.com in "testdb;defer"? lookup deferred for testdb;defer
>>> deny: condition test deferred
LOG: H=[1.2.3.4] F=<userx@somehost.example.com> temporarily rejected RCPT <x@y>: testdb lookup forced DEFER