Seems to be the same error from this thread:
http://www.sugarcrm.com/forums/showt...ight=from_name

Here is the error message:
Query Failed:INSERT into emails set id='21a2e47a-fef1-31fc-687a-452ea0e647df', date_entered='2006-10-12 20:06:10', date_modified='2006-10-12 20:06:10', assigned_user_id='c5228d25-1405-4d7c-0f15-452d3e616af4', modified_user_id='c5228d25-1405-4d7c-0f15-452d3e616af4', created_by='c5228d25-1405-4d7c-0f15-452d3e616af4', name='failure notice', date_start='2006-10-12', time_start='20:06:00', description=null, description_html=null, from_addr='MAILER-DAEMON@networksolutionsprivateregistration.com ', from_name='\"MAILER-DAEMON@networksolutionsprivateregistration.com\" ', to_addrs='vic3@comdirections.com ', type='inbound', status='unread', message_id='28a89877a00088e97168922240a0625f', reply_to_name=null, intent='pick', mailbox_id='12d7017e-64f7-94e5-a30c-452d3ed4c1f1', raw_source='Received: from networksolutionsprivateregistration.com ([205.178.188.19]) by southconnect.com with MailEnable ESMTP; Tue, 10 Oct 2006 16:12:17 -0400\r\nReceived: (qmail 28468 invoked for bounce); 10 Oct 2006 20:15:42 -0000\r\nDate: 10 Oct 2006 20:15:42 -0000\r\nFrom: MAILER-DAEMON@networksolutionsprivateregistration.com\r\nTo: vic3@comdirections.com\r\nSubject: failure notice\r\nPrecedence: bulk\r\nReturn-Path: <>\r\n\r\n', deleted='0'::MySQL error 1406: Data too long for column 'from_name' at row 1

I've tried deleting the offending message from my In-box and still get the error.
MySQL Version 5.0.24a-win32