>And how is your filter configured to weed out temporary errors?

By cut and try, pretty much.  You just have to recognize certain patterns
like "THIS IS A WARNING MESSAGE ONLY" and "Reason: Unable to access cc:Mail
Post Office" and transfer them to the Trash.  I don't think you can do this
in Eudora Light, I have Eudora Pro.  What makes it a pain is that I still
have to download them :) but at least I don't have to read them.

Nathan