This is an example of failures happening when Port 25 is switched to Proxmox. I switch back to exchange directly when not testing.
Oct 30 08:00:23 proxmox systemd[1]: Started Hourly Proxmox Mail Gateway activities.
Oct 30 08:01:19 proxmox pmg-smtp-filter[18578]: starting database maintainance...
I am attempting to receive an email from an external port 25, and pass it to the mail server that is internal after receipt from Proxmox. So it is my understanding that Port 25 would carry it all the way to the exchange box? I am unconcerned with external email traffic at this point.
If my...
I am attempting to set up Proxmox for the first time feed external emails via SMTP 25 into Proxmox and relay the data to an exchange environment. For the sake of arguments my external email address is mail.default.com.
Relaying:
mail.default.com
25
SMTP
No
None
Relay Domains:
mail.default.com...