==== REQUIRED BASIC INFO OF YOUR IREDMAIL SERVER ====
- iRedMail version (check /etc/iredmail-release): 1.5.2
- Deployed with iRedMail Easy or the downloadable installer? download
- Linux/BSD distribution name and version: Ubuntu 20.04
- Store mail accounts in which backend (LDAP/MySQL/PGSQL): PGSQL
- 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.
====

Is there a way I can configure iRedMail to use a specific IP bound to the server when sending from a particular domain?

I have multiple domains being handled by the mail server, and multiple RDNS records pointing to the different domains for incoming, but the problem is for outgoing I need to route them to the same IPs as what's configured for incoming.