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SBS 2008/Exchange 2007 Unable to send unauthenicated relay mail from inside LAN

I have a SBS 2008 server with exchange 2007 and Forefront. I am trying to open up unauthenicated outgoing relay on the internal LAN so some applications and devices can send email. I have setup a new receive connector following MS Technet's "How to Allow Anonymous Relay on a Receive Connector" documentation located here (I have tried both configurations):

http://technet.microsoft.com/en-us/library/bb232021.aspx

When I try to send mail it still fails with a "530 5.7.1 Client was not authenticated" error. I need to permit internal devices such as scanners and applications to send internal and external mail.
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paynster
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paynster
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1 Solution
 
Rajith EnchiparambilOffice 365 & Exchange ArchitectCommented:
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paynsterAuthor Commented:
This article is just a copy of the technet receive connector instructions: "How to Allow Anonymous Relay on a Receive Connector" that I have previously mentioned and done. See my question and the link.
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Rajith EnchiparambilOffice 365 & Exchange ArchitectCommented:
Have you restarted the server / services if you have configured everything correctly?
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Rajith EnchiparambilOffice 365 & Exchange ArchitectCommented:
In the EMC >> Server Configuration >> Hub Transport > Receive Connectors

Do you have a default Receive connector?  If so, on the Authentication tab, are you allowing Basic Authentication?  Also on the permissions tab, do you have Anonymous users checked?
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paynsterAuthor Commented:
Yes, I first tried restarting the Exchange services and then I restarted the server. This did not resolve the problem. I also tried adding the LAN to the "allowed IP" list as well.
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Rajith EnchiparambilOffice 365 & Exchange ArchitectCommented:
Check your receive connector authentication and permissions as per my post above.
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paynsterAuthor Commented:
I have three receive connectors:
Default "servername"
Windows SBS Fax SharePoint Recieve "servername"
Windows SBS Intenet Receive "servername"

and the one I created per the MS Technet article

Relay-Internal

and it is configured exactly as instructed in the article in the "externally secure" configuration. I did however try both configurations in the article. I should not need to change any of the default receive connectors that are preconfigured with SBS 2008.
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paynsterAuthor Commented:
On the default received connector it is set with Basic Authenication checked under the authenication tab, but on the permissions tab, Anonymous users is not checked.
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paynsterAuthor Commented:
I checked Anonymous Users under the Permissions Tab of the Default Receive connector and that resolved the problem, Thank you for your help.
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