--- sendmail-8.14.3/cf/feature/block_bad_helo.m4		2006-06-16 00:49:30.000000000 +0200

+++ sendmail-8.14.3/cf/feature/block_bad_helo.m4.ipv6-bad-helo	2010-01-03 23:28:25.000000000 +0100

@@ -16,3 +16,5 @@

 define(`_BLOCK_BAD_HELO_', `')dnl

 RELAY_DOMAIN(`127.0.0.1')dnl

 LOCAL_DOMAIN(`[127.0.0.1]')dnl

+RELAY_DOMAIN(`IPv6:::1')dnl

+LOCAL_DOMAIN(`[IPv6:::1]')dnl