They dont want to customize the PTR for customers because it makes it easier for them to audit their network having it reflective of where you are on their network.
Its also more work. But most providers have automation in place to all customers to do this themselves - or at least make it easier for the provider to handle. The issue as I see it is that the PTR identifies your host specifically, not their network. The PTR should reflect you as an individual domain entity. If they need/want to audit via DNS names, they should internally track their own CNAMEs that point to the real customer PTR. Then they can do whatever they want. In the end this is all going to bit them in the arse. Many public mail systems not only check or the existence of the PTR, but also scrutinize what it says (in terms of appearing like its a residential spambot, etc) - and its only going to become more restrict moving forward and anti-spam practices require that more and more of these DNS record components not only exist - but also MATCH - also ni relation to what a mail server is announcing itself as with its HELO greeting during the SMTP session. On Wed, May 28, 2008 at 3:50 PM, N Parr <[EMAIL PROTECTED]> wrote: > Thanks for the help everyone, I've already sent them an email telling > them they need to change the policy or loose me as a customer. I also > verified with Verizon (only other option) that they support changing the > RDNS on their static DSL account also. So far I can't find anyone other > that this one provider that doesn't do it and I told them so. > Could you explain what you mean by "their upstream should be auditing > their CNAMES? > > -----Original Message----- > From: Kennedy, Jim [mailto:[EMAIL PROTECTED] > Sent: Wednesday, May 28, 2008 2:13 PM > To: NT System Admin Issues > Subject: RE: Reverse DNS Advice for outbound email > > > Outstanding point, and more ammo for your debate with them. > > >> -----Original Message----- >> From: Micheal Espinola Jr [mailto:[EMAIL PROTECTED] >> Sent: Wednesday, May 28, 2008 3:09 PM >> To: NT System Admin Issues >> Subject: Re: Reverse DNS Advice for outbound email >> >> They should be auditing CNAMEs. > > > ~ Upgrade to Next Generation Antispam/Antivirus with Ninja! ~ > ~ <http://www.sunbelt-software.com/SunbeltMessagingNinja.cfm> ~ > > > ~ Upgrade to Next Generation Antispam/Antivirus with Ninja! ~ > ~ <http://www.sunbelt-software.com/SunbeltMessagingNinja.cfm> ~ > -- ME2 ~ Upgrade to Next Generation Antispam/Antivirus with Ninja! ~ ~ <http://www.sunbelt-software.com/SunbeltMessagingNinja.cfm> ~
