Effective Anti-Spamming with Sender Policy Framework

Sender Policy Framework or SPF is the Anti-Forgery solution, that checks the return path of an email address and makes it easier to identify spoofed emails. Domain owners identify sending mail servers in DNS. SMTP receivers verify the envelope sender address against this information, and can distinguish authentic messages from forgeries before any message data is transmitted. Under normal circumstances, when you send an email from a mail server and if your mail server permits sending emails from non-local domains

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