Internal mail goes to spam

Hi everyone,

I have a problem with one of my customers. An applicationserver ( is sending e-mailmessages to people of the company when the application receives a new order. These e-mails are put into the junk folder of outlook. Outlook displays the following message: The message is put into the junk folder other than the outlook-filter for spam-mail. This message is translated freely from Dutch.

But the strange thing is that there isn't any spamfilter active. All the clients use trend micro WFB, but this doesn't scan e-mailmessages. I have checked the logs from the exchange and I think that the application isn't authenticating itself with the e-mailserver and just sending mail as to

I have no idea why the e-mails are being put into to junk. The only thing I could think of is because the application doesn't authenticate itself, the sender remains "" and isn't translated to the user "info" in the active directory. When I check the logs on the exchange server, the sender address remains ""..

But then the questions remains, which filter is putting the messages into the junk? I have set the exchange up so that it accepts e-mails from the IP-address of the application-server. Maybe the SCL-filter is putting it into the junk? I have set it up to move emails with an SCL higher than 9 to the junk (can't disable it?!)

I hope someone can help me come to the right solution! Thanks in advance!
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Silencer001Author Commented:
This is the mailheader of the message:

Received: from APPSERVER ([]) by with Microsoft SMTPSVC(6.0.3790.4675); Tue, 4 Oct 2011 09:05:16 +0200
MIME-Version: 1.0
Content-Type: multipart/alternative;
Content-Class: urn:content-classes:message
Return-Path: <>
X-OriginalArrivalTime: 04 Oct 2011 07:05:16.0995 (UTC) FILETIME=[F8883130:01CC8263]
X-MimeOLE: Produced By Microsoft Exchange V6.5
Subject: orders
Date: Tue, 4 Oct 2011 09:05:17 +0200
Message-ID: <>
Thread-Topic: orders
Thread-Index: AcyCY/jXcSVTNQ6mQyS9x2XaXH2p3A==
From: "info" <>
To: "sales" <>

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1. Add to safe sender in outlook.

2. If exchange filtering is enabled add ip address in connection filtering.

3. Check for antispam settings and bypass this IP/user

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Silencer001Author Commented:
Thanks for you suggestion TalkExchange!

I did everything except checking if they added it to safe senders, I assumed they did because it always was added to the junk.

I logged into owa of the account and added the sender to safe senders and now problem is solved. Thanks!
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