>>> end of ACL "check_recipient": DENY
LOG: H=ten-1.test.ex (test) [V4NET.0.0.1] F=<userx@cam.ac.uk> rejected RCPT <userx@cam.ac.uk>: relay not permitted
Exim version x.yz ....
+Hints DB:
changed uid/gid: forcing real = effective
uid=uuuu gid=CALLER_GID pid=p1234
configuration file is TESTSUITE/test-config