It seems that ESF is not providing detailed information in logs to determine why an email might have been rejected. Here's an example:
Any tips from people who have been using DA a bit longer?
2020-01-06 18:08:15 1ioVrS-00073v-U1 ESF score is 1000 / 500000
2020-01-06 18:08:15 1ioVrS-00073v-U1 H={sender HELO} [{sender IP}] X=TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384:256 CV=no F=<{from address}> rejected after DATA: Your message to <{recipient address}> was classified as SPAM. Please add more content, cut down on HTML links, use fewer naughty words etc. Also, ask your IT dept to make sure your mailserver has REVERSEDNS, SPF, DKIM, and is not on any black lists. Your score: 1005
Any tips from people who have been using DA a bit longer?