You know that this thread is 2 years old and that the OP never came back explaining his problem?
This is in addition the Printing & Prepress forum. I can however move your questionto an adequate forum, when I know more about it.
Please answer the question of sukritd: Acrobat version, OS and version, mail system and version, as you state you have above problem when sending mail.
Your query wasn't in line with the thread theme earlier, as @Abambo mentioned above. I have branched your discussion out.
Please help us with more information as requested above. We will be happy to help.