I’m trying to get mailcow to actually accept email from my proxmox hosts about status updates and such, I’m not very knowledgeable with how postfix/email in general works. I’m not sure if I need to add their IP addresses to a whitelist somewhere or set the hosts up to login as a specific user. I tried something for that and postfix logs just say “discarding EHLO keywords: CHUNKING” or other just disconnects.