I’ll be very straight to the point. I installed Cyberpanel in an instance via Amazon AWS EC2 and I am having a problem now.
After I have correctly configured all the DNS parameters, the emails I send simply do not reach the recipient’s inbox.
There is no error in the shipment itself, but they just don’t get there.
Did you set SPF, DKIM and DMARC records for your domain?
Make sure these are correctly configured and also make sure you set a valid postmaster return address in DMARC rules to receive mail reports from recipient domains in order to diagnose any possible delivery problem. EasyDMARC has free tools to help you with this, especially gathering reports and creating a weekly digest report to monitor your mail domains (I’m not affiliated), making it much easier. Just register and read on.