A mandatory patch - otherwise RBL does not work right.

diff -u -r1.10 mxverify.c
--- smtpserver/mxverify.c       1999/04/11 00:18:19     1.10
+++ smtpserver/mxverify.c       1999/04/14 17:35:20
@@ -451,7 +451,7 @@
       char hbuf[2000], *s, *suf;
       /* int hspc; */

-       if (ipaf == AF_INET) {
+       if (ipaf == P_K_IPv4) {
         sprintf(hbuf, "%d.%d.%d.%d.",
                 ipaddr[3], ipaddr[2], ipaddr[1], ipaddr[0]);