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Win Rar Attachment blocked with errors

Posted on 2014-04-25
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Last Modified: 2014-05-03
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.
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Question by:cciedreamer
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5 Comments
 
LVL 44

Expert Comment

by:Amit
ID: 40023260
try this solution, on client machine run fix it tool.

http://support.microsoft.com/kb/958012
0
 
LVL 3

Author Comment

by:cciedreamer
ID: 40023396
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
0
 
LVL 3

Author Comment

by:cciedreamer
ID: 40023561
Tried running the given fix but didn't work.

Still receiving the attachment as text file
0
 
LVL 3

Accepted Solution

by:
cciedreamer earned 0 total points
ID: 40024463
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
0
 
LVL 3

Author Closing Comment

by:cciedreamer
ID: 40039041
I found the solution by myself.

Thanks
0

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