+tls_advertise_hosts =
+
+# ----- Main settings -----
+
+acl_not_smtp = check_rcpt
+queue_only
+
+begin acl
+
+check_rcpt:
+ warn
+ set acl_m1 = ${map {<,$recipients} \
+ {${lookup dnsdb{a=${domain:$item}}{$value}fail}}}
+ delay = 4s
+ set acl_m1 = ${map {<,$recipients} \
+ {${lookup dnsdb{a=${domain:$item}}{$value}fail}}}
+ accept