[CritFix] Increase default words_decay

conf/options.inc

@@ -34,7 +34,7 @@ allow_raw_input = true;
 
 # Start ignore words when reaching the following limit, so the total
 # amount of words processed will not be *LIKELY more than the twice of that limit
-words_decay = 200;
+words_decay = 600;
 
 # Write statistics about rspamd usage to the round-robin database
 rrd = "${DBDIR}/rspamd.rrd";

src/libserver/cfg_utils.c

@@ -41,7 +41,7 @@
 #define DEFAULT_MAP_FILE_WATCH_MULTIPLIER 1
 #define DEFAULT_MIN_WORD 0
 #define DEFAULT_MAX_WORD 40
-#define DEFAULT_WORDS_DECAY 200
+#define DEFAULT_WORDS_DECAY 600
 #define DEFAULT_MAX_MESSAGE (50 * 1024 * 1024)
 #define DEFAULT_MAX_PIC (1 * 1024 * 1024)
 #define DEFAULT_MAX_SHOTS 100