Dhanamerdeka I reinstall the mail server, but the problem still there
I try to setup aapanel on new vps, the status is still "inoperable", but I can access roundcube
I check the web config and adjust old vps with the new web config, but still can not access roundcube
Finally, I uninstall nginx free firewall from App Store and voila, I can access the webmail!
Hope this help. Thank you