Sender Permitted From (SPF) is a means for mail servers to verify email was sent from another mail server that is permitted to send mail for the sender's domain. The list of servers is provided in a DNS entry for the domain. All of our hosting packages come with a default SPF record.
We currently recommend you use an SPF record such as:
v=spf1 mx a include:spf.elirion.com -all
This says email can only come from the server hosting your web site, the servers that handle your incoming email, or any of the servers listed in the included SPF record.
You may wish to modify your SPF record. For example, if your ISP is Cox and you send email via Cox's mail servers using your domain name, you should add an entry such as:
include:cox.net
to tell receiving mail servers to include Cox's SPF record when deciding whether email is legitimate.
