SPF is a old and horribly broken standard, and should not be relied on for at least 10 years now. DKIM and DMARC is the way to go for outbound SMTP.
Google didn't break SMTP, spammers did.
SPF is a old and horribly broken standard, and should not be relied on for at least 10 years now. DKIM and DMARC is the way to go for outbound SMTP.
Google didn't break SMTP, spammers did.