Fix recursion on dns_again_means_nonexist. Bug 2911

[exim.git] / doc / doc-txt / ChangeLog

diff --git a/doc/doc-txt/ChangeLog b/doc/doc-txt/ChangeLog
index db37c22bb34a5f1fb3df277870f8ae72c470634d..ee86f52d662e4ed49a040dae37992f6cd2733ba7 100644 (file)
--- a/doc/doc-txt/ChangeLog
+++ b/doc/doc-txt/ChangeLog
@@ -81,6 +81,19 @@ JH/17 Permit the ACL "encrypted" condition to be used in a HELO/EHLO ACL,
       the change JH/16 it could only return false (and before 4.91 was not
       permitted).
 
+JH/18 Fix a fencepost error in logging.  Previously (since 4.92) when a log line
+      was exactly sized compared to the log buffer, a crash occurred with the
+      misleading message "bad memory reference; pool not found".
+      Found and traced by Jasen Betts.
+
+JH/19 Bug 2911: Fix a recursion in DNS lookups.  Previously, if the main option
+      dns_again_means_nonexist included an element causing a DNS lookup which
+      iteslf returned DNS_AGAIN, unbounded recursion occurred.  Possible results
+      included (though probably not limited to) a process crash from stack
+      memory limit, or from excessive open files.  Replace this with a paniclog
+      whine (as this is likely a configuration error), and returning
+      DNS_NOMATCH.
+
 
 Exim version 4.96
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