Very pleased to see this outcome. Glad you were able to get it working. 

Regards,
Al Iverson

-- 
Al Iverson | Chicago, IL | (312) 725-0130
Twitter: @aliverson | www.spamresource.com

> On Apr 27, 2014, at 3:45 PM, Paul Scott <[email protected]> wrote:
> 
> Okay, I have implemented DKIM on the postfix mail server, and all of the 
> issues I was reporting have been resolved.
> 
> I apologize for denigrating DMARC and am chagrined at my failure to RTFM and 
> implement DKIM.
> 
> But most of all, a big THANK YOU to Franck and other responders for setting 
> me on the right path.
> 
> Paul
> 
> 
>> On Apr 26, 2014, at 9:58 PM, Franck Martin <[email protected]> wrote:
>> 
>> Paul,
>> 
>> To me it seems because your mail server breaks DKIM when forwarding. DMARC 
>> relies on DKIM not getting broken in your scenario.
>> 
>> Here what I propose you.
>> 1) open an email account at gmail
>> 2) open an email account at yahoo
>> 3) acquire a private domain and get it to relay all mails to the yahoo 
>> account
>> 4) send an email from the gmail account to the private domain
>> 5) check the authentication results on the email you received at gmail
>> 6) see that DKIM was broken
>> 7) fix your mail server until DKIM does not break
>> 
>> If you tell us what mail server you use to forward, may be we can point you 
>> to some information on how to preserve DKIM.
>> 
>> How that sounds?
> 
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