==== REQUIRED BASIC INFO OF YOUR IREDMAIL SERVER ====
- iRedMail version (check /etc/iredmail-release): v0.9.8
- Linux/BSD distribution name and version: centos 7.4
- 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.
====

Hello,
Based on these logs:
2018/12/13 11:01:59 [error] 62821#0: *188 open() "/var/www/html/autodiscover/autodiscover.json" failed (2: No such file or directory), client: 5.2.130.224, server: _, request: "GET /autodiscover/autodiscover.json?Email=postmaster%40appclouds.eu&Protocol=ActiveSync&RedirectCount=1 HTTP/1.1", host: "autodiscover.appclouds.eu"
2018/12/13 11:02:08 [error] 62821#0: *190 open() "/var/www/html/Autodiscover/Autodiscover.xml" failed (2: No such file or directory), client: 5.2.130.224, server: _, request: "POST /Autodiscover/Autodiscover.xml HTTP/1.1", host: "autodiscover.appclouds.eu"
2018/12/13 11:02:08 [error] 62821#0: *191 open() "/var/www/html/Autodiscover/Autodiscover.xml" failed (2: No such file or directory), client: 5.2.130.224, server: _, request: "POST /Autodiscover/Autodiscover.xml HTTP/1.1", host: "autodiscover.appclouds.eu"

I can't figure out how to setup autodiscover for this domain. None of my domain has working autodiscover.
Any idea?