I did not realize that I am running my private SMTPd (+ imaps) for nearly 8 years. I never had issues. My score on test-mail is 9/10 because of lack of DKIM. I

I did not realize that I am running my private SMTPd (+ imaps) for nearly 8 years. I never had issues. My score on test-mail is 9/10 because of lack of DKIM. I will implement DKIM, see if I can get 10/10.