[otrs] Attachment handling to multiple recipient

Dear all, On my OTRS 1.3.2, I do encounter the problem when sending reply ticket with attachment to more than 1 recipient, (1 in To: and a few in CC :) the mail just not going out and I keep stuck to the reply page. I do remember that some might have ask the same question before but I could not find it in achieve. Can anyone give me a resolution please! With Best Rgds Nuttapong