Mailserver configuration

This page provides information on how to make your mailserver more resiliant against mail abuse.

Resources

1. Mail-Test - tests the spammyness of your emails (SPF, DKIM, DMARC)
2. Port 25 Authentication Checker - tests whether SPF and DKIM have been correctly setup for you domain
3. OpenDKIM update helper - automate the generation of new DKIM keys