I have run my own private mail server off and on for over 25 years, so it is just something I am used to. I just had an invoice from someone using bill.com blo

I have run my own private mail server off and on for over 25 years, so it is just something I am used to. I just had an invoice from someone using bill.com blocked by spamassassin, since I set 4.7 as my spam level (it was 4.8) 2.5 FREEMAIL_FORGED_REPLYTO Freemail in Reply-To, but not From 1.3 HTML_IMAGE_ONLY_24 BODY: HTML: images with 2000-2400 bytes of words 1.1 MIME_HTML_ONLY BODY: Message only has text/html MIME parts -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's domain Usually I look in my spam folder once in a while, but I was busy in the past month and didn't know he had sent it. Anyhow it works well enough for me. I set up SPF in DNS a few years ago. Have not had to do DKIM or DMARC yet - if I need to, or if I have the time, I'll probably put them in. It's nice to have full control of your mail, DNS etc., but I have been doing it so long it's second nature for me.