Topic: webmail show 502 error page
==== REQUIRED BASIC INFO OF YOUR IREDMAIL SERVER ====
- iRedMail version (check /etc/iredmail-release): 0.9.8
- Linux/BSD distribution name and version: Ubuntu 16.04
- Store mail accounts in which backend (LDAP/MySQL/PGSQL): MySQL
- Web server (Apache or Nginx):Nginx
- Manage mail accounts with iRedAdmin-Pro?NO
- [IMPORTANT] Related original log or error message is required if you're experiencing an issue.
I am using letsencrypt, after done that, I can access iredadmin page with https, but when access mail, it show 502 pages all the time.
what should I do next? or I did something wrong with cert file?