>>> using ACL "check_rcpt"
>>> processing "deny" (TESTSUITE/test-config 16)
>>> check dnslists = +defer_unknown : test.again.dns
->>> DNS list check: +defer_unknown
->>> DNS list check: test.again.dns
+>>> dnslists check: +defer_unknown
+>>> dnslists check: test.again.dns
>>> new DNS lookup for 1.0.0.V4NET.test.again.dns
>>> 1.0.0.V4NET.test.again.dns in dns_again_means_nonexist? no (option unset)
+>>> dnslists: wrote cache entry, ttl=3600
LOG: DNS list lookup defer (probably timeout) for 1.0.0.V4NET.test.again.dns: returned DEFER
>>> deny: condition test deferred in ACL "check_rcpt"
LOG: H=[V4NET.0.0.1] F=<userx@x> temporarily rejected RCPT <userx@y>