Installing PowerMTA 60r3 (v6.0r3) requires a clean Linux environment (CentOS/RHEL 7 or 8 are standard) and root access. 🛠️ Pre-Installation Checklist OS: CentOS 7/8, Rocky Linux, or Ubuntu 20.04+. RAM: 2GB minimum (4GB+ recommended). DNS: Ensure your hostname is set and A/PTR records match.
A clean server environment is crucial. PowerMTA requires specific libraries to function correctly. powermta 60r3 install
# Default delivery profile
domain *
max-smtp-out 10 # Connections per domain
smtp-pipelining yes
use-starttls yes
require-starttls false # Some domains don't support TLS
dns-timeout 30
Permission Denied: Check that the pmta user has ownership of /var/log/pmta and /var/spool/pmta. Installing PowerMTA 60r3 (v6
vim /opt/powermta/etc/config.lua
Load and start: