spf-discuss
[Top] [All Lists]

Re: [spf-discuss] SPF queries by a newbie

2006-11-13 10:05:36
On Mon, 13 Nov 2006, Jon Grant wrote:

I'd also like to Reject 554 connections to my MX server from IP
addresses which do not have reverse DNS set up on them, and connections
which say HELO with a different domain name to their Reverse DNS.

Amen to strict HELO.

However, please do not reject *solely* based on lack of reverse DNS.  Broadband
ISPs are a monopoly in many areas, and small domains owners (less that class C)
have no way to force the ISP to publish or delegate a proper PTR.  Domain
owners can always use a proper HELO name, and this is clear and sufficient
proof that the MTA is managed by the domain owner.

-- 
              Stuart D. Gathman <stuart(_at_)bmsi(_dot_)com>
    Business Management Systems Inc.  Phone: 703 591-0911 Fax: 703 591-6154
"Confutatis maledictis, flammis acribus addictis" - background song for
a Microsoft sponsored "Where do you want to go from here?" commercial.

-------
Sender Policy Framework: http://www.openspf.org/
Archives at http://archives.listbox.com/spf-discuss/current/
To unsubscribe, change your address, or temporarily deactivate your 
subscription, 
please go to http://v2.listbox.com/member/?list_id=735