I just opened a ticket (Ticket ID: BNX-87850-632) because DKIM is not working correctly on my domain. I've been doing tests with port25.com, elandsys.com and sendmail.net and DKIM is showing as failed from every one of those companies. Analyzing the report gave me an idea of how I could add an additional DNS record to my domain, so I did that and tested again and it actually made things worse. So I know what I did is not good, but apparently the JH setup in my DNS isn't good either.
I'm not using Horde to send mail, but testing shows that using Horde results in no DKIM information in the mail header (none).
These DKIM issues and the forwarding SPF failures (mentioned in another thread) are getting frustrating. I'm trying to make sure our email is using SPF and DKIM in the correct way so that it has the best chance possible to be delivered, but so far I have not had much success. Any help you can provide would be appreciated. Thanks.