New posts in Spf

SPF record -- why do we use `+a` alongside `+mx`?

`connect to private/policy-spf: No such file or directory` when receive mail by postfix in centos 7

SPF and DMARC - is spf policy used?

Multiple TXT fields for same subdomain

How is this email subverting SPF checks?

Is there a way to align SPF for Google Apps alias domain?

Do changes in SPF records take time to propagate?

Failed SPF for email imported to Gmail because of client IP instead of server's in message when sent through SMTP from one local box to another

Multiple SPF DNS Record entries

Do I need to Set-up PTR record in SPF Setting?