**** SMTP testing session as if from host 1.2.3.4 **** but without any ident (RFC 1413) callback. **** This is not for real! 220 myhost.test.ex ESMTP Exim x.yz Tue, 2 Mar 1999 09:44:33 +0000 250 OK 451 Temporary local problem - please try later 221 myhost.test.ex closing connection