+
+# Retry timeout and count. This only tests the syntax; we do not
+# have any good way of testing the function.
+
+delay1500 ${lookup dnsdb{retrans_1s,retry_2,a=delay1500.test.ex}}
+****
+#
+# Cacheability
+exim -d-all+lookup -be
+a=localhost.test.ex ${lookup dnsdb{a=localhost.test.ex}{$value}fail}
+a=localhost.test.ex ${lookup dnsdb{a=localhost.test.ex}{$value}fail}
+****
+#
+# TTL-limited noncacheability
+exim -d-all+lookup -odq user@shorthost.test.ex
+****
+#
+# ACL defer_strict
+exim -bs
+HELO test
+MAIL FROM:<>
+RCPT TO:<defer_strict@test.again.dns>
+QUIT