Hi All,
I've found the answer. This a bug with Lotus Notes 6.5.3.
Please refer to the following link for details and fix/work around.
Reference #: 1205043
Closing a message from user who exceeds mail file quota returns message to all invitees
link:
http://www-1.ibm.com/support/docview.wss?rs=807&q1=end+of+support&q2=1205043&uid=swg21205043&loc=en_US&cs=utf-8&lang=enregards,