JH/32 Bug 2541: Fix segfault on bad cmdline -f (sender) argument. Previously
an attempt to copy the string was made before checking it.
+JH/33 Fix the dsearch lookup to return an untainted result. Previously the
+ taint of the lookup key was maintained; we now regard the presence in the
+ filesystem as sufficient validation.
+
+JH/34 Fix the readsocket expansion to not segfault when an empty "options"
+ argument is supplied.
+
Exim version 4.93
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