We're using Apache authentication with twiki. Just upgraded to Twiki 4.
Before upgrading (from Sept. 2004 release), when a user edited a page and had not registered, the username displayed would be e.g. johndoeexample.com (if they had logged in as johndoe@exampleNOSPAM.com
Now with Twiki 4, edits by any unregistered user show up as by Main.com, no matter which user.
Dunno how that worked. out of the box, an unregistered user always edits as TWikiGuest
. It sounds like you may have made some local customisations; to a plugin perhaps?
No feedback forthcoming, so discarding.