On 3/22/2012 4:19 AM, Martin Gregorie wrote:
The only sensible use of SPF is to prevent backscatter. This seems to work well now that most domains are running SPF-aware MTAs. I don't use SPF for spam detection and can't see any benefit from doing so. Martin
What site competent enough to use SPF is still going to be bouncing enough mail for it to matter?
SPF (and other authentication methods) are very useful for whitelisting though since it brings back the ability to whitelist based on sending domain or address without fear spoofing.
Similarly, it negates the need to manually track sender's IPs for whitelisting purposes.
-- Dave Warren http://www.hireahit.com/ http://ca.linkedin.com/in/davejwarren
