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HomeHomeGetting StartedGetting StartedInstalling DNN ...Installing DNN ...SMTP Server Problems with Exchange Edge Server 2007SMTP Server Problems with Exchange Edge Server 2007
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3/4/2010 7:18 AM
 
Sproik

Joined: 11/20/2008
Posts: 2

Was wondering if someone could give some assistance before I run out of hair to pull out!

 

My DNN installation is running on Win 2008 R2 (IIS7.5) and is working perfectly - except for one thing!

The Server is also running Exchange Edge Server (which by default prohibits relaying).  I have created a new receive connector bound to localhost (127.0.0.1) set to receive mail from localhost and the physical IP of the server itself.

This is how I created the connector:

New-ReceiveConnector -Name RelayInternal -usage Custom -Bindings '127.0.0.1:25' -fqdn webmailer.mydomain.com -RemoteIPRanges 127.0.0.1 -server mailservername -permissiongroups AnonymousUsers

Get-ReceiveConnector RelayInternal | Add-ADPermission -User "NT AUTHORITY\ANONYMOUS LOGON" -ExtendedRights "ms-Exch-SMTP-Accept-Any-Recipient"

I have set SMTP Server to 127.0.0.1, Anonymous and SSL disabled in DNN but it fails the tests with:

There has been an error trying to send the test email. The error is:
There is a problem with the configuration of your SMTP Server. Mail was not sent.

I have also tried setting SMTP to localhost and the FQDN and Physical IP of the server with no success.  If I remote desktop to the server and telnet localhost 25 - I can relay fine as I would expect so the exchange side is working...
 
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3/12/2010 8:51 AM
 
Sproik

Joined: 11/20/2008
Posts: 2

For anyone else struggling with this, the solution is simple!

To diagnose the issue:

Right click on the exchange receive connector created.  Set "Protocol logging level" to "Verbose".

Navigate to the log folder (by default C:\Program Files\Microsoft\Exchange Server\TransportRoles\Logs\ProtocolLog\SmtpReceive).

Open the log file.  Confirm the error is the same as mine -

2010-03-12T13:43:23.603Z,server\RelayInternal,08CC7951E446EE77,20,127.0.0.1:25,127.0.0.1:54333,>,550 5.7.1 Message rejected as spam by Content Filtering

To resolve:

Under Anti-spam, allowed IP Addresses, add 127.0.0.1.

Simple eh?  ;)
 
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