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Multiple Domains in your SPF Record

We ramped up our weekly newsletter (be sure to sign up!) and I noticed that our open and click-through rates are quite low. Chances are that many of those emails aren’t making it to the inbox at all. One key item was that we had a SPF record – a DNS text record – that didn’t indicate that our new email service provider was one of our senders. Internet service providers use this record to validate that your domain is authorizing to send email from that that sender.

Since our domain utilizes Google Apps, we had Google set up already. But we needed to add a second domain. Some folks make the mistake of adding an additional record. That’s not how it works, you actually have to have all of the authorized senders in a single SPF record. Here’s how our SPF record is now updated with both Google Apps and Circupress.

marketingtechblog.com. IN TXT "v=spf1 a:circupressemail.com a:_spf.google.com ~all"

It’s imperative that all the domains that are sending email on your behalf are listed within your SPF record, or else your email may not be making the inbox. If you don’t know whether or not your email service provider is listed on your SPF record, do an SPF lookup via 250ok:


Keep in mind that, after you change your TXT record with the SPF information, it will take a few hours for domain servers to propagate the changes.

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About Douglas Karr

Douglas Karr is the founder of The Marketing Technology Blog. Doug is the CMO of CircuPress and CEO of DK New Media, an agency specializing in assisting marketing technology companies with their inbound marketing - leveraging social media, blogging, search engine optimization, pay per click and public relations. Their clients include Angie's List, GoDaddy, Mindjet and many more. Douglas is also the author of Corporate Blogging for Dummies.

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