Any binary default is wrong and broken, period. It's especially wrong and broken to set that binary default to a server you have no control over. It's triply wr

Any binary default is wrong and broken, period. It's especially wrong and broken to set that binary default to a server you have no control over. It's triply wrong and broken to set that binary default to a server you have no control over whose maintainer has asked that you not use in this way. At the very least, the systemd team should have the decency to document what this default is so that administrators trying to hunt down suspicious and/or unusual activity have some starting point to go from.