No access to domain.tld/mail domain.tld/iredadmin

==== Required information ====
- iRedMail version: 0.9.1
- Store mail accounts in which backend (LDAP/MySQL/PGSQL): MariaDB
- Web server (Apache or Nginx): Nginx
- Linux/BSD distribution name and version: Debian Jessie
- Related log if you're reporting an issue:
====

I have change hostname after fresh installation but when i try to access to :

domain.tld/mail or domain.tld/iredadmin i have one error : Connexion failed. And nothing in log ! why ?