ip pools

Hello, Is there any way to define the IP pool for each domain in Proxmox Mail Gateway like I have 5 IPs and wanted to allocate the first IP 2 for domain xyz.com and 3 IPs for abc.com domain. So that email send from domain xyz.com will use first 2 IP to send email i.e. 10.1.1.1 & 10.1.1.2 (for...