Problem with DKIM in outgoing mails

[np-prxmx]

Hi to All,
I've configured the PMG with DKIM (pubblished record in DNS maintaner), I flag the Sign emails, I added the domains but the emails aren't signed with DKIM.
PMG version : 7.3.x

Do you have some recommendations?

 

[Stoiko Ivanov]

Please share the logs of such a mail, also the relevant configurations from /etc/pmg/pmg.conf and /etc/pmg/dkim/domains.