Subject: Does anyone know what the X-UIDL mail header is?
To: 'netbsd-help' <netbsd-help@NetBSD.ORG>
From: John Maier <JohnAM@datastorm.com>
List: netbsd-users
Date: 04/23/1997 21:11:09 
I've seen this hidden among the subject and from lines of some of my   
emails, what is it?

thanks
jam