For anyone that owns their own domain and runs their own Mail server. Have you ever been the victim of a joe-job where some slimy spambucket forges your domain name in his from during a spam run and you suddenly get inundated with complaints and bounces? Ever asked if anything could be done about that and been told no? Well, pretty soon you will be able to do something about it.
Sender Policy Framework is currently being pushed and adopted by a lot of big name ISP's. The way it works is, as the domain owner, you publish a txt record in your DNS that identifies the authorized mail servers for your domain. At the recipient mail server level, they do a lookup on the domain in the From and match it with the Client IP address. If it doesn't match an authorized mail server from the SPF record, they know the mail is not legit and dump it. If you are interested, find details at http://spf.pobox.com. BTW, I have implemented this on my box, very easy, took about 10 minutes and it is working like a champ. Once this starts to spread, we may very well see a huge reduction in spam. -- Bryan Phinney
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