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Everything you ever wanted to know about the Spelljammer Mailing List, but were afraid to ask.
The Cornell.edu server hosted the Spelljammer Mailing List from October of 1993 through August of 1994.
The Leicester.ac.uk server hosted the Spelljammer Mailing List from June of 1994 through November of 1996.
The old MPGN.com server hosted the Spelljammer Mailing List from November of 1996 through November of 1999.
The Oracle server at Wizards.com hosts the current incarnation of the Spelljammer Mailing List. It has hosted the list since September of 1999.
If, for some reason, the Oracle server is down, I've made a local copy. The copy is in no way current, lagging a month or more behind. If I fall way behind, remind me.