diff --git a/src/dns_conf.c b/src/dns_conf.c
index d583e1f..9dd8d00 100644
--- a/src/dns_conf.c
+++ b/src/dns_conf.c
@@ -95,7 +95,7 @@ int dns_conf_dualstack_ip_selection_threshold = 15;
 
 /* TTL */
 int dns_conf_rr_ttl;
-int dns_conf_rr_ttl_rely_max = 60;
+int dns_conf_rr_ttl_reply_max;
 int dns_conf_rr_ttl_min = 600;
 int dns_conf_rr_ttl_max;
 int dns_conf_force_AAAA_SOA;
@@ -1488,7 +1488,7 @@ static struct config_item _config_item[] = {
 	CONF_INT("rr-ttl", &dns_conf_rr_ttl, 0, CONF_INT_MAX),
 	CONF_INT("rr-ttl-min", &dns_conf_rr_ttl_min, 0, CONF_INT_MAX),
 	CONF_INT("rr-ttl-max", &dns_conf_rr_ttl_max, 0, CONF_INT_MAX),
-	CONF_INT("rr-ttl-reply-max", &dns_conf_rr_ttl_rely_max, 0, CONF_INT_MAX),
+	CONF_INT("rr-ttl-reply-max", &dns_conf_rr_ttl_reply_max, 0, CONF_INT_MAX),
 	CONF_YESNO("force-AAAA-SOA", &dns_conf_force_AAAA_SOA),
 	CONF_CUSTOM("force-qtype-SOA", _config_qtype_soa, NULL),
 	CONF_CUSTOM("blacklist-ip", _config_blacklist_ip, NULL),
diff --git a/src/dns_conf.h b/src/dns_conf.h
index 534aada..fec56a4 100644
--- a/src/dns_conf.h
+++ b/src/dns_conf.h
@@ -255,7 +255,7 @@ extern int dns_conf_dualstack_ip_selection;
 extern int dns_conf_dualstack_ip_selection_threshold;
 
 extern int dns_conf_rr_ttl;
-extern int dns_conf_rr_ttl_rely_max;
+extern int dns_conf_rr_ttl_reply_max;
 extern int dns_conf_rr_ttl_min;
 extern int dns_conf_rr_ttl_max;
 extern int dns_conf_force_AAAA_SOA;
diff --git a/src/dns_server.c b/src/dns_server.c
index e850f76..2cadfff 100644
--- a/src/dns_server.c
+++ b/src/dns_server.c
@@ -1086,6 +1086,7 @@ static int _dns_request_post(struct dns_server_post_context *context)
 	if (context->reply_ttl > 0) {
 		struct dns_update_param param;
 		param.id = request->id;
+		param.cname_ttl = context->reply_ttl;
 		param.ip_ttl = context->reply_ttl;
 		if (dns_packet_update(context->inpacket, context->inpacket_len, &param) != 0) {
 			tlog(TLOG_ERROR, "update packet info failed.");
@@ -1311,13 +1312,10 @@ static int _dns_server_request_complete(struct dns_request *request)
 out:
 	_dns_server_dualstack_selection_cache_A(request);
 
-	if (dns_conf_rr_ttl_rely_max > 0) {
-		if (ttl > dns_conf_rr_ttl_rely_max) {
-			ttl = dns_conf_rr_ttl_rely_max;
+	if (dns_conf_rr_ttl_reply_max > 0) {
+		if (ttl > dns_conf_rr_ttl_reply_max) {
+			ttl = dns_conf_rr_ttl_reply_max;
 		}
-	} else {
-		/* no need upate ttl */
-		ttl = -1;
 	}
 
 	struct dns_server_post_context context;
@@ -2362,7 +2360,7 @@ static int dns_server_resolve_callback(char *domain, dns_result_type rtype, unsi
 			context.do_audit = 1;
 			context.do_reply = 1;
 			context.do_ipset = 1;
-			context.reply_ttl = dns_conf_rr_ttl_rely_max;
+			context.reply_ttl = dns_conf_rr_ttl_reply_max;
 			return _dns_server_reply_passthrouth(&context);
 		}
 		_dns_server_process_answer(request, domain, packet, result_flag);
@@ -2754,8 +2752,8 @@ static int _dns_server_get_expired_ttl_reply(struct dns_cache *dns_cache)
 {
 	int ttl = dns_cache_get_ttl(dns_cache);
 	if (ttl > 0) {
-		if (dns_conf_rr_ttl_rely_max > 0 && ttl > dns_conf_rr_ttl_rely_max) {
-			ttl = dns_conf_rr_ttl_rely_max;
+		if (dns_conf_rr_ttl_reply_max > 0 && ttl > dns_conf_rr_ttl_reply_max) {
+			ttl = dns_conf_rr_ttl_reply_max;
 		}
 
 		return ttl;