Not able to open attached excel or pdf files

[Subhrakanta Mishra]

Dear Concerned,


      I am using Kolab 3 on Centos 6.3. When ever I am opening a attached
excel or pdf file from mail in kolab, I am getting a error message that the
file is corrupted.
But when I send the file to my gmail id I am able to open it. But if I
forward the mail with the attachment to gmail then also I am getting the
same error.


Plz help


Thanks

Sk
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