information encodes the lookup type (A vs. MX) used for the (first) host,
and the trailing two digits of the smtp 4xx reponse.
+GF/01 Bug 1715: Fix for race condition in exicyclog, where exim could attempt
+ to write to mainlog (or rejectlog, paniclog) in the window between file
+ creation and permissions/ownership being changed. Particularly affects
+ installations where exicyclog is run as root, rather than exim user;
+ result is that the running daemon panics and dies.
+
Exim version 4.86
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