In this email authentication presentation, we partnered with our friends at SparkPost in a Send It School course to explain what acronyms like SPF, DKIM, DMARC, BIMI mean and how they each uniquely solve some of the issues facing senders today. The course relays practical knowledge to help you work... Read more »
September 29, 2020
October 13, 2022
Although many organizations are migrating to the cloud via Microsoft 365 or Exchange Online, we still see many operating their own on-premises Microsoft Exchange Server. In this article we’ll talk about how to implement DKIM and DMARC on a Microsoft Exchange Server. Authored by the NSA, CISA, ASD’s ACSC, and... Read more »
September 23, 2020November 17, 2025
On September 23, 2020, we conducted a webinar with our friends at Inspired eLearning and GreatHorn: Developing an Offensive and Defensive Email Security Strategy that examines how a layered approach can provide comprehensive protection to one of your most valuable business assets, your email. Domain-based Message Authentication Reporting and Conformance (DMARC)... Read more »
September 15, 2020May 1, 2024
In this guest post from our friends at GreatHorn, learn how advanced threat detection for phishing attacks is important to protecting your organization and goes beyond just the basic security analysis and features. You have likely heard about or encounter some of these phishing attacks. Be sure to join us... Read more »
September 8, 2020April 18, 2023
In the dmarcian application, you can take advantage of IP Safelisting functionality, which is available for both API access or standard login sessions for Plus and Enterprise subscription tiers. With IP Safelisting, dmarcian account administrators can set permission levels for other account users by restricting browser-based sessions to a predefined... Read more »
August 10, 2020April 23, 2026
SparkPost Founder and Chief Evangelist, George Schlossnagle, kicked off his new interview series by sitting down with dmarcian founder, Tim Draegen, for a casual chat on the past, present and future of email authentication. dmarcian’s goal is to make DMARC accessible to all. Watch this video to learn about BIMI,... Read more »
July 13, 2020May 1, 2024
For those of you that use Cloudflare as your DNS provider, here are brief instructions for adding a DMARC record. If your domain has been added to Cloudflare through one of their partners, you’ll manage your DNS records through that hosting partner. NOTE: It’s always good practice to check the... Read more »
July 6, 2020January 7, 2025
DMARC records are published in the DNS as text records and allow a domain owner to tell email receivers what to do with email that fails authentication based on the DMARC policy. As part of that record, the pct tag tells a receiving server the percentage of email messages in... Read more »
July 6, 2020May 1, 2024
Best Practices to Protect Against Impersonations, BEC, and Account Takeover Attacks If you weren’t able to join our webinar with our partner GreatHorn, the recording and slides are now available. In the webinar we help you get a more thorough understanding of the 4 key cloud email security problems and... Read more »
June 3, 2020May 30, 2025
In this article we explain: Like SPF, DKIM is an open standard for email authentication that is used for DMARC alignment and exists in the DNS record of the domain, but it is a bit more complicated than SPF. DKIM gives emails a signature header that is added to the... Read more »
June 1, 2020February 15, 2024