Absence of DKIM singing is killing e-mail. Everything else is a “hack”. SPF is irredeemably broken (no possibility of forwarding email - ARC doesn’t work exce

Absence of DKIM singing is killing e-mail. Everything else is a “hack”. SPF is irredeemably broken (no possibility of forwarding email - ARC doesn’t work except for (again) huge providers like Cloudflare. I send a DKIM-signed email? You KNOW it’s legitimate, no matter how it arrives… Edit: I’ve been running MTAs for decades; first one in 1987 (yes, the UUCP days).