Google Apps for Business allows the use of SPF for cut back on mail spoofing. SPF (Sender Policy Framework) records allow a domain owner to specify which hosts are permitted to use their domain name when sending mail. This security seffting cuts back on email spoofing. Because SMTP is implemented in a manner which allows the sender of an email to claim to be someone else, spammers and conmen take advantage of this design flaw to send emails with forged From: addresses. The Sender Policy Framework allows a domain owner to use a special format of DNS TXT records to specify which machines/hosts are authorized to transmit email for their domain, making it difficult (but not impossible) to forge From: addresses. Continue reading “How To Set SPF records In Google Apps For Business”