IMHO that SPF is not really going to go very far as long as the name servers operated by most of the domain name registrars do not implement it, or even have a methodology for adding it to name services for their clients.
For instance one can purchase domain names from a registrar, and purchase a block of IP numbers from whoever, and you decide to use the registrar's name servers to route to your web servers and mail servers.. Currently none of the registrars have a provision for adding SPF records. These name servers do not even create reverse DNS, much less any newer technology that comes down the pike. I rather imagine that the implementation thus far has been for those who maintain their own low volume name servers, and in light of the overall internet, would be a very small percentage. For comparison, look at the very small number of IPv6 implementations. It looks to me like it will be several years before enough implementation will take place, and the spammers will have long figured out how to bypass any imposed restrictions. ====================================== Our Anti-spam solution works!! http://www.clickdoug.com/mailfilter.cfm For hosting solutions http://www.clickdoug.com http://www.forta.com/cf/isp/isp.cfm?isp_id=1069 ====================================== ----- Original Message ----- From: "Glenn Smith" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Monday, August 09, 2004 8:44 AM Subject: Re: [IMail Forum] SPF Impacts to ISPs : Are many people picking this up and implementing it? According to the web site they've only got ~6000 registrations, which is not exactly a lot when you consider the size of the internet. : : G. : : ---------- Original Message ---------------------------------- : From: "Darin Cox" <[EMAIL PROTECTED]> : Reply-To: [EMAIL PROTECTED] : Date: Mon, 9 Aug 2004 09:35:23 -0400 : : >You are correct. SPF is mostly useless in that scenario unless you can also : >list all MXs for ISPs that may be used to send from. There is a weaker SPF : >syntax for when you allow mail to come from other unknown servers, but in my : >mind there's not much point in implementing it other than to say you're : >using SPF. : > : >Darin. : > : > : >----- Original Message ----- : >From: "Glenn Smith" <[EMAIL PROTECTED]> : >To: <[EMAIL PROTECTED]> : >Sent: Monday, August 09, 2004 9:24 AM : >Subject: [IMail Forum] SPF Impacts to ISPs : > : > : >Hi All, : > : >Someone's just pointed me to http://spf.pobox.com/ which looks like there : >could be a whole load of impacts to ISPs. : > : >Has anyone really looked in to this and found anything useful out? From our : >perspective, we only send email out from our server for our domains, so not : >a huge issue to add them, although a real pain. : > : >But if you think about someone offering dialup, and they have users sending : >email with the from address as a personally registered domain rather than : >the ISPs through the ISP mail server it would stop working. : > : >Thanks, : > : >Glenn Smith : > : > : >To Unsubscribe: http://www.ipswitch.com/support/mailing-lists.html : >List Archive: http://www.mail-archive.com/imail_forum%40list.ipswitch.com/ : >Knowledge Base/FAQ: http://www.ipswitch.com/support/IMail/ : > : > : >To Unsubscribe: http://www.ipswitch.com/support/mailing-lists.html : >List Archive: http://www.mail-archive.com/imail_forum%40list.ipswitch.com/ : >Knowledge Base/FAQ: http://www.ipswitch.com/support/IMail/ : > : : : To Unsubscribe: http://www.ipswitch.com/support/mailing-lists.html : List Archive: http://www.mail-archive.com/imail_forum%40list.ipswitch.com/ : Knowledge Base/FAQ: http://www.ipswitch.com/support/IMail/ : : To Unsubscribe: http://www.ipswitch.com/support/mailing-lists.html List Archive: http://www.mail-archive.com/imail_forum%40list.ipswitch.com/ Knowledge Base/FAQ: http://www.ipswitch.com/support/IMail/
