Rspamd Fast, free and open-source spam filtering system.
https://rspamd.com/comparison.html
Month: February 2018
Simple management UI for Docker
https://github.com/portainer/portainer
MailCow : DNS Setup
https://mailcow.github.io/mailcow-dockerized-docs/prerequesite-dns/
System Monitoring With sar And ksar
https://www.howtoforge.com/system-monitoring-with-sar-and-ksar
Linux performance tip
http://www.brendangregg.com/linuxperf.html
Logging sFTP activity for chrooted users
http://www.the-art-of-web.com/system/sftp-logging-chroot/