This seems to do the trick. Setting rfc1413_query_timeout = 0s seems
to be stopping rfc1413.
neal:/a/local/beta/chekov/exim-0.42/% rcsdiff -u src/readconf.c
===================================================================
RCS file: src/readconf.c,v
retrieving revision 1.1
diff -u -r1.1 src/readconf.c
--- src/readconf.c 1996/03/19 17:03:47 1.1
+++ src/readconf.c 1996/04/22 20:42:56
@@ -56,7 +56,8 @@
{ "receiver_verify", opt_bool, &receiver_verify },
{ "retry_interval_max", opt_time, &retry_interval_max },
{ "return_path_remove", opt_bool, &return_path_remove },
- { "return_size_limit", opt_mkint, &return_size_limit },
+ { "return_size_limit", opt_mkint, &return_size_limit },
+ { "rfc1413_query_timeout", opt_time, &rfc1413_query_timeout },
{ "security", opt_lcstringptr, &security_type },
{ "sender_host_accept", opt_lcstringptr, &sender_host_accept },
{ "sender_host_reject", opt_lcstringptr, &sender_host_reject },
