DNS: time-limit cached returns, using TTL. Bug 1395

[exim.git] / src / src / lookups / dnsdb.c

diff --git a/src/src/lookups/dnsdb.c b/src/src/lookups/dnsdb.c
index e3de279e25477ffadd73ea7d2f96074668b3609d..70e6c8c637586a3bafea0815104be05ad63be60c 100644 (file)
--- a/src/src/lookups/dnsdb.c
+++ b/src/src/lookups/dnsdb.c
@@ -131,7 +131,7 @@ separator, as always, is colon. */
 
 static int
 dnsdb_find(void *handle, uschar *filename, const uschar *keystring, int length,
-  uschar **result, uschar **errmsg, BOOL *do_cache)
+  uschar **result, uschar **errmsg, uint *do_cache)
 {
 int rc;
 int size = 256;
@@ -388,6 +388,9 @@ while ((domain = string_nextinlist(&keystring, &sep, NULL, 0)))
       {
       if (rr->type != searchtype) continue;
 
+      if (*do_cache > rr->ttl)
+       *do_cache = rr->ttl;
+
       if (type == T_A || type == T_AAAA || type == T_ADDRESSES)
         {
         dns_address *da;