On Jan 14, 2005, at 2:31 PM, Steven M. Jones wrote:
Alex Aminoff wrote:
I will look into SPF and domain keys There are some other initiatives along those lines as well - has anyone implemented any of them? Does anyone have any informed guesses as to which one(s) will survive and be generally adopted?
There are many large sites using Sender-ID/SPF already, and some others like Google's GMail are using both. I'm running the free sendmail milters for both quite happily here. Outbound I use DK but haven't bothered publishing SPF records yet. However to date I don't know of any large corporations that have incorporated these checks into their spam scoring. I don't think many of the commercial anti-spam vendors have gotten that out to their customers yet. Could be wrong, though -- anybody else hearing otherwise?
AOL has SPF records published and is checking for them inbound. There are some large broadband providers which may have plans for a full SPF implementation soon. :) As for vendors including support in their products, many seem to be taking a wait and see attitude. Most are waiting to see what comes out of places like the IETF, MARID (now defunct), MASS, and the MAAWG. I've had contact with a number of companies (ironport, brightmail, openwave, etc) that have said they'll support whatever the industry wants, including SPF and DK.
I think both systems are going to be around for a while. SPF appeals to many many people because it seems like a quick hit without a lot of work. I think DK is possibly a better solution, but some of that is bias due to people screaming and shouting that SPF is the greatest thing to be invented since the wheel. While I'm a big fan of the wheel, I'm less enchanted with people who shout at me...
If people are familiar with SPF and DK, check out IIM from Cisco, which, imho, incorporates the best of both worlds.
http://identifiedmail.sourceforge.net/
Anyway, hope that helps. As you're implementing one or the other solution, you can check to see if it's working by sending test messages to an autoresponder at <[EMAIL PROTECTED]>, and you'll receive a report about what it found. I wrote the code for that just before I left Sendmail, Inc.
Hope that helps, --Steve.
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