In unmodified mailman, this usually means cookies aren't turned on, but that's probably not the problem here. It is possible that the cookie being generated is somehow messed up and Mailman can't read it if there were any changes to cookies, though.
Some related FAQ entries that might help in tracking it down:
In unmodified mailman, this usually means cookies aren't turned on, but that's probably not the problem here. It is possible that the cookie being generated is somehow messed up and Mailman can't read it if there were any changes to cookies, though.
Some related FAQ entries that might help in tracking it down:
http:// wiki.list. org/pages/ viewpage. action? pageId= 4030602
This one is related to redirection for SSL. If at some point in your test bed, the list URL was changed, this could be the problem.
http:// wiki.list. org/x/moA9
This one is about cookie-related issues.