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TMG 2010 - How to block connection from "Mac Mail" to Exchange Server

Posted on 2014-11-18
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Last Modified: 2014-11-24
Hi,

On our TMG 2010, I would like to block access to our ExchangeWebServices for Mac OS users. I searched the internet and found that you can use HTTP Signatures, to use "Client agent" information to block a connection.
For example "Client agent: Mac OS X/10.8.5 (12F45) CalendarAgent/57"

I have not much experiences with TMG and hoped that someone can help me out hier.

Any comments are appreciated.

Thanks
Joerg
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Question by:InfrontStaff
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LVL 37

Expert Comment

by:Jian An Lim
ID: 40451231
what exchange server you are using?

http://thoughtsofanidlemind.com/2010/08/12/controlling-ews-access-in-exchange-2010-sp1/

or you are interested to blocking this from External but allow internal ?
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Author Comment

by:InfrontStaff
ID: 40456852
We are using exchange 2010 and I'm aware of the possibility of EWS access control. The problem is from outside. We have users that are using Mac mail at home and the mac (for example the calendar) tries to contact the exchange mailbox with the anonymous account and after few tries, our account policy locks the AD account of that mailbox.
Therefore my idea was to block those mac client agent mentioned above.
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LVL 37

Accepted Solution

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Jian An Lim earned 500 total points
ID: 40461351
http://patrickhoban.wordpress.com/2013/01/07/0800-5/

this guy has configure something similar
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Author Comment

by:InfrontStaff
ID: 40461782
Yes this is exactly what I'm trying to do, but I'm not sure what to fill in the "Signature" Field.
I hoped someone has experience with Signatures Filtering.
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Author Closing Comment

by:InfrontStaff
ID: 40462313
The link above gave me the right direction and with the "Trial and Error" principle, I found out what I needed to do.
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