+> # Retry timeout and count. This only tests the syntax; we do not
+> # have any good way of testing the function.
+>
+> delay1500 ip4.ip4.ip4.ip4
+>
+> a=localhost.test.ex 127.0.0.1
+> a=localhost.test.ex 127.0.0.1
+>
+220 myhost.test.ex ESMTP Exim x.yz Tue, 2 Mar 1999 09:44:33 +0000\r
+250 myhost.test.ex Hello CALLER at test\r
+250 OK\r
+451 Temporary local problem - please try later\r
+221 myhost.test.ex closing connection\r