-diff -urN exim-4.62.org/src/spam.c exim-4.62/src/spam.c
---- exim-4.62.org/src/spam.c 2006-04-28 12:32:23.000000000 +0200
-+++ exim-4.62/src/spam.c 2006-06-08 10:20:26.000000000 +0200
-@@ -147,7 +147,7 @@
- AF_INET,
- spamd_address_vector[current_server]->tcp_addr,
- spamd_address_vector[current_server]->tcp_port,
-- 5 ) > -1) {
-+ 15 ) > -1) {
- /* connection OK */
- break;
- };
+--- exim-4.86/src/spam.c~ 2015-07-23 23:20:37.000000000 +0200
++++ exim-4.86/src/spam.c 2015-07-29 10:41:57.918864020 +0200
+@@ -344,7 +344,7 @@ start = time(NULL);
+ for (;;)
+ {
+ /*XXX could potentially use TFO early-data here */
+- if ( (spamd_cctx.sock = ip_streamsocket(sd->hostspec, &errstr, 5, NULL)) >= 0
++ if ( (spamd_cctx.sock = ip_streamsocket(sd->hostspec, &errstr, 15, NULL)) >= 0
+ || sd->retry <= 0
+ )
+ break;
+