Deliverability

SenderID/SPF

When you add SPF information to your DNS records, you are able to specify which email servers you use to send email from your domain.This validates your sending email address, which can improve your email deliverability rate. In other words, SPF helps to keep your domain's email out of your recipients' spam folders.

To get started, you must first contact your DNS hosting company and ask them to add the following SPF information to your DNS records. Or,if you can log in to the control panel for your DNS, you can make this change yourself.

For example, if your domain falls into all of these categories, the SPF would look like the following:

v=spf1 include:emailsrvr.com include:md02.com ip4:1.2.3.4 ~all

Repeat these steps for every domain from which you plan to send emails.Note: When you are composing an email, you must use a "From" address(or, specifically, a "Return-Path") that belongs to a SPF-enabled domain, otherwise SPF will not be in effect.