I use Orchestration service Cloudron (cloudron.io) to run email for my small company. It has worked flawlessly with dkim, SPF and dmarc working great! Email to

I use Orchestration service Cloudron (cloudron.io) to run email for my small company. It has worked flawlessly with dkim, SPF and dmarc working great! Email together with all the other preconfigured goodies make it a totally worthy investment,the yearly cost, for me.