Win Rar Attachment blocked with errors

Hello Experts,

I have Exchange 2010 with SP3 Roll Update 3 with Forefront installed on it.

I have a user who was trying to send an email with attachment in 5 MB size and it is win rar compressed file.

but the internal and external users are receiving as text

This is the error

FILE QUARANTINED

The original contents of this file have been replaced with
this message because of its characteristics.
File name: 'winmail.dat->File.part3.rar'
Malware name: 'CorruptedCompressedFile'

Please can someone help to resolve this.

Thanking in advance.
LVL 3
cciedreamerAsked:
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cciedreamerConnect With a Mentor Author Commented:
Just an update to this problem.

I found an option on Forefront Protection for Exchange 2010 under Policy Magement > General Options > Advanced

Treat multi-part .rar archive as a corrupted file

I removed the checked from this options, which enabled by default. Now I can send multi send recieve multi-part rar successfully.

But this gives 1 concern, any muli-rar file will escape the detection on forefront.

Any other way without removing disabling that option, I would highly appreciate.

Thanks
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AmitIT ArchitectCommented:
try this solution, on client machine run fix it tool.

http://support.microsoft.com/kb/958012
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cciedreamerAuthor Commented:
Thanks. I have tried sending from many machines but it sends  the file attachment as text file.

I am sending Multiple-Part rar file.

Thanks
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cciedreamerAuthor Commented:
Tried running the given fix but didn't work.

Still receiving the attachment as text file
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cciedreamerAuthor Commented:
I found the solution by myself.

Thanks
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