While there isn't a single "official" manual publicly hosted for PowerMTA (as it is proprietary software from Port25/SparkPost), several reputable technical guides provide a clear roadmap for installing .
For this guide, we will assume the path ( /etc/pmta/ ). powermta 60r3 install
After saving, verify the configuration:
: Use WinSCP or FileZilla to upload the PowerMTA-6.0r3.rpm package to the /root folder. While there isn't a single "official" manual publicly
Edit /etc/security/limits.conf :
: Improved handling of queues after an unexpected shutdown. spool-dir /var/spool/pmta max-queue-size 100000 <
<queue> spool-dir /var/spool/pmta max-queue-size 100000 </queue>