Hello,

As per the title, I have an issue whereby internal email from a reporting server is being classed as Junk in Outlook 2010 and 2013 for all recipients.

 -The Junk-email filtering level for all users in Outlook is set to "Low" and is applied via group policy.

 -I have anti-spam agents installed on all Exchange mailbox servers, but the "InternalMailEnabled" parameter is set to "false" for all agents.

 -The receive connector used to receive internal email has the "Externally secured" flag set, which allows spam-filtering to be bypassed.

 -The "InternalSMTPServers" parameter of the transport config contains the IP of the sending server.

- The email address has been added to several users "Safe Senders" list in Outlook.

 -I have a transport rule set up to bypass spam filtering for the sending address of the SQLReportingServices@domain.com, yet the email header on any of these messages does not contain the "SCL -1" stamp as per the below:

#    Header    Value
1    MIME-Version    1.0
2    From    <SQLReportingServices@domain.com>
3    To    <User1@domain.com>, <user2@domain.com>
4    Date    Tue, 10 Mar 2015 07:35:32 +0000
5    Subject    Report was executed at 10/03/2015 07:35:08
6    Content-Type    multipart/mixed; boundary="--boundary_90_638c99de-c35d-4d06-b992-536e14201c6d"
7    Message-ID    <dacbc167cba2410aa0a0c2088bdff95c@SERVER01.domain.localnet>
8    Return-Path    SQLReportingServices@domain.com
9    X-MS-Exchange-Organization-AuthSource    SERVER01.domain.localnet
10    X-MS-Exchange-Organization-AuthAs    Internal
11    X-MS-Exchange-Organization-AuthMechanism    10
12    X-MS-Exchange-Organization-Network-Message-Id    8d357628-f2e9-48d5-77e2-08d2291beca4
13    X-MS-Exchange-Organization-AVStamp-Enterprise    1.0

Can anyone assist in explaining why these emails are being continually marked as Junk in Outlook, and any further troubleshooting steps.

Thanks

Hello

please show transport rules settings.

Hello

please show transport rules settings.

Hello

tip: remove 'Inside the organization' cond

Hello

tip: remove 'Inside the organization' cond

Hi Matt,

From your description, when you send a message using the Send-MailMessage cmdlet, the value of SCL is -1 in the message header. But when you send from Outlook, the SCL is not -1. I recommend you send and receive messages from OWA to determine whether the issue is related to Outlook side.

Hope this can be helpful to you.

Best regards,

Hi Matt,

From your description, when you send a message using the Send-MailMessage cmdlet, the value of SCL is -1 in the message header. But when you send from Outlook, the SCL is not -1. I recommend you send and receive messages from OWA to determine whether the issue is related to Outlook side.

Hope this can be helpful to you.

Best re

Hi,

From your description, I would like to clarify that we can't create a transport rule with action setting the spam confidence level to -1 in Exchange 2013. The value of spam confidence level is from 0 to 9.

For your reference:

Hope this can be helpful to you.

Best regards,

Hello

tip: https://support.microsoft.com/en-us/kb/2885002?wa=wsignin1.0

Hi,

Any update?

Best regards,

Hi,

Any update?

Best re

Hi,

From your description, please make sure the encryption between Outlook and Exchange server is enabled. If it is disabled, Outlook cannot verify that the message is delivered through a secure connection. Therefore, Outlook ignores the SCL value of -1 and treats the message as if it has an SCL value of 0.

Hope it can be helpful.

Best regards,

Hi,

I am just writing to see if you have obtained the opportunity to test the solution.

Best regards,

Hi,

I am just writing to see if you have obtained the opportunity to test the solution.

Best re

Hi,

If the issue persists, I recommend you check if this problematic email address is added to the Blocked Senders list unexpectedly. If yes, please remove it from the list and check the result.

What's more, please make sure that you have installed the Outlook 2013 hotfix package that is dated April 8, 2014.

For your reference:

Outlook junk email filtering issue with Exchange Server 2013 and Office 365

http://blogs.technet.com/b/outlooking/archive/2013/09/25/outlook-junk-email-filtering-issue-with-exchange-server-2013-and-office-365.aspx

Hope this can be helpful to you.

Best regards,