Install libopendmarc-dev by entering the following commands in the terminal:
sudo apt update sudo apt install libopendmarc-dev
Headers and development libraries for the OpenDMARC library
Domain-based Message Authentication, Reporting and Conformance (DMARC), builds on the successes of technologies such as DomainKeys Identified Mail (DKIM) and the Sender Policy Framework (SPF) to create an infrastructure that enforces policy on domain names that are visible to end users, and creates a feedback framework for identifying and tracking fraudulent use of domain names in email. . This package provides the required header files and development libraries for developing against the OpenDMARC library.