如何让 SPF 对齐通过子域的 DMARC?
我有以下 DNS 配置: $ dig +noall +answer -t txt example.com example.com. 626 IN TXT "v=spf1 +a +mx include:sendgrid.net include:_spf.google.com -all" $ dig +noall +answer -t txt google._domainkey.example.com google._domainkey.example.com. 600 IN TXT "v=DKIM1; k=rsa; ......" $ dig +...