23. May 2016 11:11 by [email protected]: > Mail submitted this way will appear to come from IP address 127.0.0.1. > If you don't have that address in the list of OpenDKIM's local > networks, then it won't sign.
I do have that local host already in the opendkim configuration. So I stopped looking in Postfix and looked with highest milter-debug level in opendkim configuration. I found no signing table match for '[email protected]' In my opendkim signing table I only have *@example.com s1._domainkey.example.com But in the configuration I also have Subdomains yes So I thought it was enough. I added to the signing table + *@mail.example.com s1._domainkey.example.com *@example.com s1._domainkey.example.com and now the sendmail-sent email is signed! I see it now also has a report of "Signature is ill-formed" in the desktop mail client. But I am sure that is not anything to do with Postix. I think also for debugging I will need to keep the opendkim configuration debug level high; Postfix I think reports only what it is given BY the milter for logging.
