Help to configure Mail Gateway (incoming and outgoing)

Hello,

hope you can help me.

I have Proxmox Mail Gateway installed on Vultr but my mail server is external (on A2Hosting), so i have insert the records in the DNS of mydomain.org to point to Proxmox Mail Gateway on Vultr like:

mailgateway 3600 A IP.of.Proxmox.Gateway.on.Vultr
@ 3600 MX mailgateway.mydomain.org

In the Relay Domains tab on Proxmox Mail Gateway configuration section, i insert the domain of the account email info @ mydomain.org
mydomain.org

External...

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