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From Chris Lindley <chris.lind...@zuuk.com>
Subject SPF
Date Tue, 01 Jun 2004 09:32:25 GMT
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

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