Good news. There is a apparently a fix for the problem in build 22 of Eudora Pro 4.2 (see note below). Also, it seems there is a work-around (don't close the composition window)... Marty Date: Tue, 23 Mar 1999 14:30:03 -0800 From: Judi Vaughn <[log in to unmask]> Subject: Double ID's Jeff Beckley wrote: It was our bug. I fixed it back in January, and shows up in build 22 and later of 4.2. It would happen when you opened/closed a composition window window multiple times and saved changes. You'd wind up getting an extra Message-Id: for every open/close/save cycle. I hope this helps - pass it on. Judi Thank you, Judi Vaughn Technical Support Specialist Qualcomm's Eudora Technical Support Please include our previous correspondence when you reply to my message, as I receive a large amount of mail from many clients. Need immediate help? Get it here: <http://eudora.qualcomm.com/techsupport/> Get the latest free maintenance release at <http://www.eudora.com/pro_email/updaters.html>