Topic: mail ---> internet ports | security issue
==== REQUIRED BASIC INFO OF YOUR IREDMAIL SERVER ====
- iRedMail version (check /etc/iredmail-release): 1.4.2
- Deployed with iRedMail Easy or the downloadable installer? downloadable installer
- Linux/BSD distribution name and version: ubuntu 20.04
- Store mail accounts in which backend (LDAP/MySQL/PGSQL): MySQL
- Web server (Apache or Nginx): Nginx
- Manage mail accounts with iRedAdmin-Pro? Yes
- [IMPORTANT] Related original log or error message is required if you're experiencing an issue.
I opened firewall servives as (any) from mail server to internet ,
I will specify and open only necessary and needed ports , so what is these ports that iRedmail server talk with them for check licenceing and update ,, ETC .
foucs : mail ---> internet , NOT internet---> mail >