The SPF Surveyor is a diagnostic tool that presents a graphical view of SPF records for a specific domain. This view can help you figure out which entries are in use and which ones are no longer needed.
Vaughn Talbert1 February 2022
We sometimes hear from our customers who have problems with how Mailchimp handles SPF. They see the following in their dmarcian dashboard:SPF is not possible as Mailchimp uses their own domain in the bounce address.And sometimes they’ll message us with some variation of the following:I chatted with a support rep at Mailchimp this morning and…
Becky Kobsik24 February 2021
SPF is all about publishing a list of servers that are authorized to send on behalf of a domain. After writing out a list of servers in the form of an SPF record, the right thing to do is to end an SPF record with something that says "and everything else on the Internet is…
dmarcian3 October 2020
The email world was a much different place back in 1997 when the idea of SPF was taking shape. It went mostly unnoticed when first publicly mentioned around 2000, but fast-forward 20 years, and it is now one of the most widespread forms of email authentication in use, along with DKIM and DMARC. Ensuring the…
John Bowers23 March 2020
In this article we explain: What is an SPF Record? How to Add an SPF Record How to Create an SPF Record Already have an SPF Record but not sure if its setup correctly? Use our free SPF Surveyor to perform an SPF Check.An SPF record or SPF TXT record is a record that is part…
Vaughn Talbert24 February 2020
SPF (Sender Policy Framework) has been around for a long time and enjoys a rich history reaching back to 1997, with the SPF Project itself starting in June 2003. (a timeline history of SPF can be found here). However, there are some challenges with SPF's feedback and it is often misunderstood. We take a look at these…
Vaughn Talbert21 March 2019
Dec 14, 1997 Jim Miller sends Paul Vixie an email with his idea on verifying SMTP MAIL FROM address from means of outbound-smtp MX dns records. Note: This event and the date are not confirmed by public records and are based solely on information provided by Paul Vixie. Mar 27, 2000 – Public mention of the idea to create 'MS'…
Vaughn Talbert18 March 2019
People sometimes run into the "too many DNS lookups" error when rolling out and managing SPF. It doesn't help that there is a lot of bad guidance on the Internet. This article describes how to fix this issue. (more…)
dmarcian4 August 2016
To turn DMARC into something useful to people, dmarcian processes DMARC data using a big pile of rules. These rules identify sources of email, and dmarcian presents users with DMARC compliance information based on email source. One identified source of email is called "SPF-Identified Servers", and dmarcian users are often curious as to how data ends up in…
dmarcian5 April 2016
How can you eventually move to a p=reject policy when third parties are unable to send email properly on your behalf? In many cases, a DMARC compliant SMTP relay server can be used to do the trick. In this article, we’ll explore some of the facets of sending DMARC compliant email from third parties, what…
dmarcian19 January 2016
We've put together a short overview video about SPF: https://youtu.be/WFPYrAr1boU This video is part of a larger video series on all things DMARC.
dmarcian7 December 2015
