I've a problem with dkik.
I send message signed by dkim but my mail server doesn't support this feature. So I've generate a pair of keys (private and public) and I've configured the TXT record with the public key.
The problem is that I haven't access to the mail server. Can I sign the message manually with my client mail or in other way?
Thanks!
Here's a thread that includes some options for client-side DKIM signing - Setting up DomainKeys/DKIM in a PHP-based SMTP client .
That said, most mail servers support DKIM out of the box at this point - you may want to switch to one that does.