Topic: block outbound domain mail to external
==== REQUIRED BASIC INFO OF YOUR IREDMAIL SERVER ====
- iRedMail version (check /etc/iredmail-release): 1.6.0 MariaDB
- Deployed with iRedMail Easy or the downloadable installer? download
- Linux/BSD distribution name and version: debian 11
- 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.
====
Good morning. 
I would have to block a domain of my server (multi domain) for sending mail. 
ex: @example.com can not send mail but only receive. 
I gave iredapd --outbound --blacklist... but still sends to external email addresses. 
What's missing? 
Thank you
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