Hi good day. I am trying to configure the proxmox mail gateway that I recently installed, but I have not managed to work even observing the same information in the Traking Center. What I am trying to do is that all the emails that come from my zimbra mail server are sent to the Proxmox Mail Gateway and the latter sends it to the endian firewall. In proxmox mail gateway I made the following configurations: Mail Proxy Configuration: Default Relay: Zimbra Mail Server IP Port: 25 SmartHost: Endian firewall IP Relay Domain: Add the name of the mail domain in this case ferrominera.gob.ve External port SMTP: 25 Internal SMTP port: 26 This is all I have configured in PMG. At the Zimbra level, configure it to send mails from the domain ferrominera.gob.ve to the IP address of the PMG through port 25. Please could you help me if something is wrongly configured or I need to do in the PMG.