xxx@a.b.c
  router = r4, transport = t1

**** SMTP testing session as if from host V4NET.0.0.0
**** 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
550 $domain_data=DOMAIN DATA $local_part_data=LOCAL PART DATA
221 myhost.test.ex closing connection