When installing or upgrading to a lightweight zesty (17.04) ubuntu server I use this /etc/apt/sources.list example below which I manage via the edpkg alias from the NetServa SH (shell scripts) Githb repo. Note: this still applies to the later artful and bionic releases, just ctrl-\ search and replace “zesty” for “artful”, “bionic”…

This is a brief outline of how to take advantage of using only Sieve scripts to manage spam via Spamprobe and Dovecot IMAP services on a Ubuntu Zesty 17.04 server. In my case I use separate UID:GIDs for each virtual domain (but not for each user) and a custom path to each…