**** SMTP testing session as if from host V4NET.0.0.0
**** but without any ident (RFC 1413) callback.
**** This is not for real!

220 the.local.host.name ESMTP Exim x.yz Tue, 2 Mar 1999 09:44:33 +0000
250 OK
451 Temporary local problem - please try later
221 the.local.host.name closing connection
userx@not.test.ex cannot be resolved at this time: remote host address is the local host