Re: DKIM With Virtual Hosting

[Matthieu Baechler <ma...@apache.org>]

Hi Jerry,
Here is what gmail think about your email:

DKIM validation fails. It can be a problem with the way you sign the
mail or a problem with Apache mailing-list implementation.
Could you send me a direct mail to matthieu@apache.org so that I can
check?
Cheers,
-- Matthieu Baechler
On Fri, 2019-12-27 at 10:49 -0600, Jerry Malcolm wrote:
> I know just enough about DKIM to be very dangerous... so bear with
> me 
> here...
> 
> I am still struggling with mail I send being bounced.  In the interim
> to 
> protect my clients, I configured some of my tomcat apps to use
> Amazon's 
> SES (SMTP) service bypassing my JAMES server.  I analyzed the mail
> sent 
> via AWS just to see what might be different.  One thing I see is TWO 
> DKIM signatures... one for the "from" domain of the email and
> another 
> for the sending host domain "amazonaws.com".
> 
> I have had JAMES configured with DKIM for years. But all I have is a 
> DKIM signature for my main server domain and not for each individual 
> sending domain.  mail-tester.com hasn't complained. But again, mail
> is 
> bouncing from some domains like icloud.com, outlook.com, etc.  So 
> "something" is still wrong.... Everything is on the table as
> possibly 
> flawed right now.
> 
> So what is the 'right' way to do DKIM?  I am going to assume that if
> AWS 
> is signing for both the virtual domain and the sending server
> domain, 
> that's probably a good thing.  But I don't see a way in the JAMES
> DKIM 
> mailet to add a second signature for the sending virtual host domain.
> 
> Am I missing something?  Is my DKIM fine with only signing the basic 
> server?  Should I continue to look elsewhere for my problems?  Or
> should 
> I do additional work to start signing the virtual sending domain as
> well?
> 
> Thx
> 
> Jerry
> 
> 
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