==== REQUIRED BASIC INFO OF YOUR IREDMAIL SERVER ====
- iRedMail version (check /etc/iredmail-release): 0.9.8
- Linux/BSD distribution name and version: Ubuntu 18.04 LTS
- Store mail accounts in which backend (LDAP/MySQL/PGSQL): PGSQL
- 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.
====
Hello,
I have in my local infrastructure some applications who are not able to send mail in submission port with TLS auth.
I would like to add on Iredmail a new listening port with less authentication security level only from 1 or 2 inside ip address
For exemple : to be able to accept receive mail on port 2525 without authentication like port 25...

Which file should I modify /etc/postfix/main.cf ? or more and what should I add and where ?
Is there another solution with iredmail for local communication ?

Thanks a lot