gopi_65986 How do I configure mailcow to use Let’s Encrypt certificates for all the ports (HTTPS/SMTP/IMAP/POP)? I’ve removed the proxy option at cloudflare for my mail server.
esackbauer It will be used for all ports automatically. https://docs.mailcow.email/post_installation/firststeps-ssl/#lets-encrypt-out-of-the-box If not, or if self signed certificates are used, you either have not all DNS records properly configured, or ACME was not able to get the certificates e.g. due to firewall port 80 incoming not open.
gopi_65986 Thank you @esackbauer. The problem was that I had the mail server’s A record proxied and then I bypassed the proxy per suggestions on the net. The “connection not private” error showed up because I did not restart the mail containers. It works now.