The Little Toolbox for Postmasters
Commissioning a mail server is initially not terribly complicated, but at the latest when it comes to keeping an eye on your reputation, or if you want to implement authentication measures like SPF (Sender Policy Framework), DKIM (DomainKeys Identified Mail) or DMARC (Domain-based Message Authentication, Reporting and Conformance), it becomes considerably more complex and there’s no way around using appropriate analytical and other tools. Fortunately, there are several free possibilities available in the Internet. The websites are all in English.