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how do I get Microsoft Exchange to treat all email from another mail server as safe ?

Posted on 2013-10-30
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Last Modified: 2013-11-14
Hi,
We have all incoming email scanned Trend Micro Hosted Email Security - an external server.

However we seem to be getting a proportion of messages that get through Trend's email scanning host and then get bounced as spam by content filtering in Microsoft Exchange.

None of the emails I've checked so far are spam i.e. they are all valid.

The obvious solution that occurs to me is to get Microsoft Exchange to 'trust' Trend's email servers and ensure that all emails scanned by the Trend servers are marked as 'safe' by Microsoft Exchange.

Can this be done ?  If so how do I do it ?
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Question by:Michael Green
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Expert Comment

by:Vijaya Babu Sekar
ID: 39613349
if you have Trend for External SPAM filter , you can disable content filtering in Exchange server end.


if you want to disabled content filter for external mails

Set-ContentFilterConfig -ExternalMailEnabled $false

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Thanks.
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Author Comment

by:Michael Green
ID: 39613360
Hi,
Yes I had already thought of that.  The issue is that even though the Exchange server is front ended by Trend's server its also still internet facing - so I wanted to only disable content filtering for mail coming from the Trend server i.e. leave content filtering on for anything sent directly to our Exchange server.

Is there any way to do that ? e.g. by IP ranging ?

Regards
MIchael
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Accepted Solution

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Vijaya Babu Sekar earned 2000 total points
ID: 39613361
if you add as whitelist, it will not scanning the mail content from Trend. so you need to add the white list , domain name or ip list.

Thanks.
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