On Sat, Jun 28, 2008 at 2:21 PM, Frank Bulk - iNAME <[EMAIL PROTECTED]> wrote: > FB> The point is that those are able to create a valid rDNS entry likely > have more control of their infrastructure than those who don't. You must > admit, if you can't get a proper rDNS entry created for your domain, what > does that say about your ability to control your infrastructure?
And to that point, a valid rDNS entry can easily be removed by the netblock holder at smal co-lo facility. This is an easy, although not widely used enough, means for co-lo providers to retain control over leased (mail) servers without worrying about the legal issues with pre-maturely taking a customer offline. I've never seen a posted service delivery statement that guaranteed PTRs. In fact, IMHO, PTRs are a courtesy from the netblock owner, not a given. -Jim P.
