Last week, LinkedIn was the target of a massive, global cyber attack. The attack came in the form of phishing that looks almost exactly like real LinkedIn address confirmation emails. Only two things differed: (more…)
dmarcian6 February 2017
As many of you may have noticed, there have recently been some changes to the UI regarding subdomains. After talking with people about how subdomains were being used and abused across the internet, we decided to spend some time rethinking how dmarcian process, sorts and displays subdomains. These new changes allow our system to handle large quantities of subdomains more efficiently and accurately. (more…)
dmarcian9 January 2017
People sometimes run into the "too many DNS lookups" error when rolling out SPF (Sender Policy Framework). 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
A common problem many people face when implementing DMARC for the first time is that they are not receiving aggregate XML reports (reports generated for delivery to the rua= tag) in their dmarcian account. These XML reports are the driving force of DMARC. Without them, it's very difficult to get an accurate picture of your domain's usage across the internet. If you've created a dmarcian account, have published records but have not received data, don't fret! It is typically caused by…
dmarcian13 July 2016
dmarcian tools are under constant development to make DMARC deployment faster and easier for everyone. This article describes how to best use the tools today. (more…)
dmarcian12 July 2016
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 that it is OK to send example.org's reports to sample.net. Otherwise, reports will not be sent to sample.net. Allowing "external" domains to accept DMARC reports…
dmarcian23 June 2016
