The other day I came across a thread that talked about setting up a "master SPF record" to include in the other DNS records on the server, but I can't for the life of me find it now, I thought I bookmarked it but alas I didn't. I have tried several different searches but no luck. Can anybody help ?
This was posted yesterday: https://www.howtoforge.com/community/threads/postfix-pypolicyd-spf-centos7.86992/ I do not remember other threads fitting your description recently.
Include "include:" in your search (you create one SPF record at the hoster domain then include: it in client SPF records).
Using "include" worked Many thanks! This is the one I was looking for https://www.howtoforge.com/communit...-for-smtp-isp-postfix-multiple-domains.85213/
