sender: User@b.domain
    from: User@b.domain
      to: User@b.domain
      cc: User@b.domain
     bcc: User@b.domain
reply-to: User@b.domain
env-from: User@b.domain
  env-to: User@b.domain
  sender: User@d.domain
    from: User@d.domain
      to: User@d.domain
      cc: User@d.domain
     bcc: User@d.domain
reply-to: User@d.domain
env-from: User@d.domain
  env-to: User@d.domain

**** SMTP testing session as if from host 127.0.0.1
**** 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 myhost.test.ex Hello tester [127.0.0.1]
250 OK
250 Accepted
354 Enter message, ending with "." on a line by itself
250 OK id=10HmaX-000000005vi-0000

**** SMTP testing: that is not a real message id!

221 myhost.test.ex closing connection