I have installed a new Proxmox Gateway 6.4-3 virtual machine. I want to change smtp_helo_name and smtpd_banner because when sending to one of the domains I get error 550 5.5.0 Invalid EHLO / HELO domain.
In Proxmox v. 5.2-7 was configuration file in /etc/pmg/templates/main.cf.in, but in...
My Proxmox Mailgateway Cluster is now working fine. But sometimes I have bad SMTP Connection times, tested on mxtoolbox.com. But only on the second Proxmox Mailgateway Server. I disable Greylisting.
SMTP Connection Time
6.944 seconds - Warning on Connection time