[Mailman-Users] Bad Marshal Data

[Jonah Baker]

A list of 40,000 has gotten corrupted and I can't seem to restore it from
backup.  The error I get from running check_db is "bad marshal data."  Both
config.db and config.db.last were corrupted.  I tried replacing them with
three backups but I continue to get the "bad marshal data" error.  How do I
recover the database?  Rebuilding will be a major undertaking, and I will
loose everyone's passwords, so I would rather massage out any errors by hand
in the corrupted file.

I was told that withlist will allow me to look into a corrupted database but
I can't seem to make it work at the command line.

What might have lead to the corruption is the rampant creation of .tmp.
files.  There were 65 of them when I last backed up.  Any idea what might
have been causing this?