Running piler on Zentyal

What’s Zentyal? Zentyal is an easy to use Linux alternative to Windows Server. Its features include replacing an MS Active Directory, securing Internet access using VPN and firewall, etc. It also has a dedicated mail server, however it doesn’t have email archiving capabilities. This is…

Running piler on Nethserver

What’s Nethserver? A lot of small businesses run a customized Linux distribution specialized to small offices and medium enterprises. Nethserver is such a Linux distro based on the popular Centos 7. Nethserver is an operating system for Linux enthusiasts, designed for SMB companies. It features…

No-cost RHEL for small production workloads

You might have heard the rumor that Redhat had basically killed the Centos product line as we knew it in last December: https://blog.centos.org/2020/12/future-is-centos-stream/ This caused a massive disturbance in the Centos users’ community, see https://arstechnica.com/gadgets/2020/12/centos-shifts-from-red-hat-unbranded-to-red-hat-beta/  for more on the topic. So Redhat in a response…

SMTP ACL list

By default the piler-smtp server receives emails from any sources, and it may be a challenge to get rid of spammers accessing port 25. You may have several options to achieve that, eg. use iptables or a network firewall to restrict smtp access to the…