I had an account on lonestar.sdf.org, but then I let it lapse and there was a change to the server name/login. I'm not sure I could reclaim lonestar, but I remember trying to make that my permanent account for a while. Between that and Riseup, the early 00's were a great time for staking your place with an email address that signaled your values.

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.