==== REQUIRED BASIC INFO OF YOUR IREDMAIL SERVER ====
- iRedMail version (check /etc/iredmail-release): 1.1
- Deployed with iRedMail Easy or the downloadable installer? Downloadable
- Linux/BSD distribution name and version:  Ubuntu 18.04
- Store mail accounts in which backend (LDAP/MySQL/PGSQL): Ldap
- 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
It is on new install that i got the trouble.
after start install it is stop with error message no pub key available
and connection refuse with keyserver.

manually install sogo  repository public key and restart install !

Regards