SPF support in James:
Having been victim to spammers spoofing one of our domains, we have now defined SPF text strings to try and prevent further abuse - though unfortunately, without a greater take-up through all mail servers on this technology, spam falsely claiming to be from one of our domains will continue to get through.
As we are Java specialists and use the James mail server we'd like to see SPF support brought into Jakarta James. There is already a sourceforge project to provide a Java library to parse SPF strings (http://sourceforge.net/projects/spfjava/) albeit in its infancy, and the matcher/mailet architecture of James would mean that it should be relatively trivial to write a matcher which retrieves and parses SPF strings given access to the DNS.
Is anybody working on this ?
After an initial investigation into how this could be done, the biggest barrier is the lack of exposure of the DNS methods from the underlying library to matcher code. Are there any plans to open up the DNS interface for use by matcher/mailet code ? If this were done, then adding an SPF matcher would be straight-forward. As it stands it would require a patch to core James code. We're happy to look into this further but prefer not to affect core James code or clash with any other work to provide this facility.
-- Chris Lindley www.zuuk.com
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