Category Archives: Email

PART 2 - DKIM

Currently, the three protocols you need to put into place to secure and authorize your email are SPF, DMARC and DKIM. This post will talk about creating a DKIM record. DKIM stands for Domain Keys Identified Email and is a somewhat more involved and challenging element to implement than SPF. DKIM also requires outgoing email servers to be authorized over and above just adding a DNS record.

DKIM requires a DNS record that includes a public cryptography key to help verify that a sender is allowed to send email for a given domain as well as the private key that is used for signing outgoing email. Adding a DKIM entry for a domain is basically the same as the SPF record;...

PART 3 - DMARC

Currently, the three protocols you need to put into place to secure and authorize your email are SPF, DMARC and DKIM. This post will talk about creating a DMARC record. Without a DMARC record, and attacker can easily impersonate your domain and make any email look like it came from your account.

DMARC stands for Domain based Message Authentication, Reporting and Conformance - it is a protocol built on top of existing SPF and DKIM protocols. DMARC does a couple of things:

1. It reads the results from SPF and DKIM
2. It requires SPF AND DKIM to pass AND the domain used by both of those protocols has to be the same as the domain found in the...