JH/18 Bug 1867: make the fail_defer_domains option on a dnslookup router work
for missing MX records. Previously it only worked for missing A records.
-JH/19 Buf 1850: support Radius libraries that return REJECT_RC
+JH/19 Bug 1850: support Radius libraries that return REJECT_RC.
+
+JH/20 Bug 1872: Ensure that acl_smtp_notquit is run when the connection drops
+ after the data-go-ahead and data-ack. Patch from Jason Betts.
Exim version 4.87