I'm still running an older Postfix. Mostly incoming but a few outgoing. Have SPF, DKIM and DMARC configured. My sent mails don't go to Spam except for some tim

I'm still running an older Postfix. Mostly incoming but a few outgoing. Have SPF, DKIM and DMARC configured. My sent mails don't go to Spam except for some times on o365. That issue is well documented, even MXRoute has that issue.