[Mimedefang] Yahoo DMARC

Joe Quinn jquinn at pccc.com
Mon Apr 14 12:50:24 EDT 2014

We are having issues with Yahoo's DMARC policy unsubscribing a very 
large number of members for Mailman lists we host.

Does anyone have a quick piece of code that we can use which bounces 
their message and inserts a nice description of why?
We are already matching on Yahoo senders to /mailman.\.*/


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