As of now I recommend everybody to use Prosody stable as XMPP server running on Debian stable. Enable the Prosody modules that provide the XEPs mentioned in Daniel's blog post and/or in XEP-0375: XMPP Compliance Suites 2016[1]. You can either run it at home, which means you have the full stack incl. hardware under your control, or rent a cheap vServer for this, which eventually makes the initial setup easier, as you don't have to deal with dynamic IP addresses. Maintaining a Prosody stable installation on Debian stable means usually nero zero effort. Make sure to have the "security" apt sources and eventually Debian's unattended-upgrade[2] enabled. That's it.

1: https://xmpp.org/extensions/xep-0375.html 2: https://wiki.debian.org/UnattendedUpgrades