SPF Records for IVS-hosted Mail Service

Background

Sender Policy Framework, or SPF, is a system that is designed to provide some level of check against the authenticity of an email. Essentially, it aims to assist mail servers in determining whether or not a particular email message was sent from an 'authorized source' on the Internet, so the server can reject forgeries. While the standard is still in "experimental" status, it offers a significant benefit to those using it today. Note that SPF does not protect your own email account from incoming spam, it does help to protect your domain from being blamed for spam forged to look like it came from you.

SPF Usage

First, ensure that your domain's "MX" records are correct. You should have only one MX record, with Priority=0, Host=@, Server=mail.identityvector.com. ("Server" may also be "Goes to", "Target", or another label.)

Next, create a TXT record, with the "host" field containing your domain name, and the "TXT value" field containing the following: "v=spf1 a mx ~all". This will allow the server(s) listed as your MX records (in this case, mail.identityvector.com) to send mail on behalf of your domain, and tell other servers on the Internet that any other server purporting to be transferring mail from an account at your domain is likely forging traffic.