How DMARC Contributes to Email Delivery and Engagement

In the State of Email Security, Mimecast reports that email “impersonation attacks increased almost 70 percent in comparison to the results in last year’s report – with 73 percent of those organizations impacted by impersonation attacks having experienced a direct loss, specifically loss of customers (28%), financial loss (29%) and data loss (40%). Phishing attacks…
John Bowers
26 July 2019
Technical Guidance

The Importance of Sources in DMARC

A “source” is what we call any company that offers its clients the ability to send emails with their own domain. This translates to any infrastructure that’s capable of “sending emails on behalf of others.” Bearing this explanation in mind, we can identify several types of sources, the most notable are: ESPs - offer their…
Vaughn Talbert
23 May 2019
Technical Guidance

Understanding Shadow IT

For those who’ve been doing IT long enough to remember using a green display monitor also remember a time when everything was locked down and centralized. During the early 1980s, Local Area Networks became more popular and with them came decentralization, allowing other internal departments within an organization to take control of their IT requirements…
Vaughn Talbert
23 May 2019

The History of SPF

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 Talbert
18 March 2019
Technical Guidance

What is “External Destination Verification”?

A domain's DMARC record can tell the world to send DMARC reports to a different domain. For example, the domain example.org might have a DMARC record of: v=DMARC1; p=none; rua=mailto:dmarc_reports@sample.net This DMARC record tells people to send reports regarding example.org to the email address of dmarc_reports@sample.net. Before reports are sent, sample.net must tell the world…
dmarcian
23 June 2016