My eMails are blocked because my IP is on a Spamhaus PBL listing. How do I get it removed?
My eMails are blocked because my IP is on a Spamhaus PBL listing. I cannot send or receive email UNLESS I use a VPN to generate a different IP. Spamhaus suggests that I "Turn on SMTP Authentification" in Apple Mail but it's not clear to me how this can be done. My web server suggests that I use a VPN. I have tried and this does work. How can I get Mail to work without recourse to a VPN? (My @icloud and@gmail are not affected.)
MacBook Pro 13", macOS 10.14