Inactive accounts are in fact purged from time to time, but the domain you are thinking of is sdf.lonestar.org. The sdf.org domain was only added a few years ag

Inactive accounts are in fact purged from time to time, but the domain you are thinking of is sdf.lonestar.org. The sdf.org domain was only added a few years ago, and for a while the admin was also using freeshell.org for marketing purposes. lonestar.org is the UUCP network that SDF has long been connected with.