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2006-04
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Date: Wed, 19 Apr 2006 09:06:05 +1000
From: Craig Sanders To: aussie-isp Cc: aussie-isp Message-Id: <20060418230605.GB12751@taz.net.au> In-Reply-To: <000001c662f9$c3021470$2522630a@t22> References: <20060418105458.GA1102@k7.mavetju> <000001c662f9$c3021470$2522630a@t22> Subject: Re: [Oz-ISP] SPF Records |
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On Wed, Apr 19, 2006 at 01:07:07AM +1000, Sean Winn wrote: > > SPF isn't an anti-spammer tool, it's an anti-forgery tool. I don't > > care if spammers use their own throw-away domains for it. I do care > > if spammers/viruses use my address as the sender address. > > Certainly is. But if it's not definitive, what's its value? huh? it IS definitive. any domain owner can use it to provide a definitive list of hosts allowed to send mail claiming to be from their domain. or do you have some superior definition of "definitive" that the rest of the world needs to know? > Only '-all' is definitive. And 4 major domains used for mail say they > can't be definitive. So they don't seem to place a high value on SPF for > themselves. SPF is not useful for every domain. nor is it intended to be. it is useful only for domains that CAN come up with a definitive list of authorised hosts. this typically excludes ISPs(*) and mail service providers and other domain owners with a widely distributed userbase, however it does include most organisations (including banks and other financial institutions, corporations, companies, businesses, government departments, non-profit groups, etc etc etc). (*) except for those like Edwin who are willing and able to a) educate their users, b) cope with the flack from clueless users, and c) provide decent service for their users. craig -- craig sanders <c a s @ t a z . n e t . a u (part time cyborg) ---- email "unsubscribe aussie-isp" to m a j o r d o m o @ a u s s i e . n e t to be removed. |
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