Sender Policy Framework

A Sender Policy Framework (SPF) record is a type of Domain Name Service (DNS) record that provides a mechanism to allow receiving mail exchangers to identify which mail servers are permitted to send email on your behalf of your domain. The purpose of an SPF record is to prevent spammers from sending emails with forged From addresses on your domain.

Domains which publish SPF records are less likely to be targeted by spammers and phishers using forged From email addresses and therefore less likely to blacklisted by spam filters. Inomial recommends the use of an SPF record to ensure outgoing Smile dispatches are not caught in spam filters on the recipient end.

You will need your own network administrator to create and add appropriate mail server host addresses to your SPF record. Other potential areas that your network administrator could confirm are set up and configured correctly are DomainKeys Identified Mail (DKIM), Sender-ID and Domain Keys.