+HELO test
+MAIL FROM:<uncheckable@localhost1>
+RCPT TO:<z@remote.domain>
+QUIT
+****
+server PORT_S
+220 Server ready
+EHLO
+250 OK
+MAIL FROM
+250 OK
+RCPT TO
+550 Recipient not liked, with bad char:\x80\xFF\xFF
+QUIT
+250 OK
+****
+# recipient, refused, badchar in resp
+sudo exim -v -bs -oMa V4NET.0.0.3
+HELO test