Dear all, I'm confused about how to enable ARC signing and how it is related to DKIM. As it stands, the contents of the section [ARC] in mailmain.cfg are [ARC] enabled: yes authserv_id: *******.org # Should this be the address of the mailserver (postfix) instead? privkey: /etc/mailman3/***.org.mailman.key # Shouldn't this point to the same private key used by rspamd for DKIM signing? selector: mailman # shouldn't this point to the same selector as rspam, or should it be separate? If so, should I also set up a separate TXT entry domain: ****.org # mailman serves multiple domains. Should all be there? Should the exact subdomain be there? Finally, how come that at present, mailman does NOT sign the messages? They come with the original DKIM signature, but there is no ARC signature. Unfortunately, the official documentation says very little about ARC, so I have to post my possibly stupid questions here. Johannes