On Thu, Feb 02, 2012 at 11:01:52PM +1300, Rob Kampen wrote: > 50.229.46.71.in-addr.arpa. 777 IN PTR mail2.orangebankfl.com. However: % getent hosts mail2.orangebankfl.com. 71.43.202.234 mail2.orangebankfl.com 71.46.229.50 != 71.43.202.234 Senders DNS is broken. rDNS lookup validation is failing. -- rgds Stephen