fetchmail workaround for a bug in Microsoft Exchange

treat missing header in response to a FETCH command as a transient error
(Reported by John Connett)

if there are too many transient errors, log it.

1 files changed, 3 insertions, 0 deletions

diff --git a/tunable.h b/tunable.h
index 6202e7bd..fddeaf9b 100644
--- a/tunable.h
+++ b/tunable.h
@@ -21,3 +21,6 @@
 
 /* default skipped message warning interval in seconds */
 #define WARNING_INTERVAL	3600
+
+/* maximum transient errors to accept */
+#define MAX_TRANSIENT_ERRORS	20