Here are a couple of resources I used while getting Domain Keys, DKIM and D-MARK sorted out:

http://www.port25.com/support/authentication-center/email-verification/
http://www.mailradar.com/domainkeys/


On 30 Apr, 2014, at 10:04 AM, Ben Parker <[log in to unmask]> wrote:

> On Tue, 29 Apr 2014 17:11:32 +0000, Matthew Black <[log in to unmask]>
> wrote:
> 
>> I am looking for a how-to guide that goes beyond just entering information into LISTSERV. Something that explains how I can test my SPF and DomainKey records,
> 
> There are various SPF record checkers.  I use MXToolbox SuperTool.
> 
> DomainKeys DNS Testing Tools 
>  DomainKey Policy Record Tester. 
>   http://domainkeys.sourceforge.net/policycheck.html
> 
>  DomainKey Selector Record Tester. 
>   http://domainkeys.sourceforge.net/selectorcheck.html
> 
>> instructions for verifying that a message has been properly signed.
> 
> get a yahoo or gmail account.  Subscribe that account to a test list 
> (configured to sign of course) send a message to that list. Upon receipt,
> examine the full headers (message source) to verify if yahoo or gmail
> validate the signing.
> 

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