==== Required information ====
- iRedMail version (check /etc/iredmail-release):
- Linux/BSD distribution name and version:
- Store mail accounts in which backend (LDAP/MySQL/PGSQL):
- Web server (Apache or Nginx):
- Manage mail accounts with iRedAdmin-Pro?
- [IMPORTANT] Related original log or error message is required if you're experiencing an issue.
====

I have my mail domain website hosted on the separate box than my mail server.
I just move the mail server to a new box and installed iredmail (SOGo) and update MX record to point to the new box. Now my user with mydomain.com are not able to receive email from "mydomain.com"

$toMail = "me@gmail.com"; //this works - I get the email at my gmail
$toMail = "me@mydomain.com"; //this doesn't - I get nothing