[opendmarc-users] Missing Authentication-Results header

[Les Fenison]

I am using postfix with opendkim and opendmarc but not getting the 
headers I expected. I was looking for a Authentication-Results header 
but all I get is this...

DMARC-Filter: OpenDMARC Filter v1.3.1 mydomain.com 5EFAE1512138

How can I get it to add the Authentication-Results header?
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