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Exchange 2007 Public folders will not receive e-mail from outside domain

ethernet69
ethernet69 asked
on
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Last Modified: 2013-02-10
Hi-

I have an SBS2008 server running Exchange 2007. Mail flow works fine using the private (mail) information store. We can also use public folders internally and send/receive e-mail to/from these mail-enabled public folders without any issues. However, here's the problem:
When we send a message from an EXTERNAL domain to any one of these mail-enabled public folders, I get an NDR back stating:
This message was created automatically by mail delivery software.

"A message that you sent could not be delivered to one or more of its
recipients. This is a permanent error. The following address(es) failed:

  helpdesk@<domain_name.com>
    No Such User Here"


I know what you are probably thinking: He doesn't have the Anonymous Account set to "Contributer" permissions on these public folders. Well, I can tell you that I have, in fact, given the Anonymous account "Contributor" permissions on all folders, but I STILL get these NDRs.
Can you help resolve this for me? Any help/forward motion would be greatly appreciated.

Thanks,
Brian
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Commented:
Have you checked that the folder can recieve mail from non authenticated users?

In mail flow settings of the folder from the public folders manager untick the "only allow authentcated users" I forget exact location.

Author

Commented:
Can you please be more specific? I don't know where you are talking about finding this setting. Please provide details where in the Exchange Management console this can be found...
Alan HardistyCo-Owner
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Top Expert 2011

Commented:
Can your users internally email the Public Folder user (helpdesk@yourdomain.com) and does the email hit the Public Folder?

Author

Commented:
Hi Alan...Yes, it works just fine from inside the domain
Alan HardistyCo-Owner
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Top Expert 2011

Commented:
Just testing things out on my Exchange 2010 server!

Author

Commented:
Okey dokey smokey :-)
Alan HardistyCo-Owner
CERTIFIED EXPERT
Top Expert 2011

Commented:
Hmmmm - Do you use a 3rd party to spam filter your mail before it hits your server or a device like a Barracuda?
Does mail get delivered directly to your server?
Alan HardistyCo-Owner
CERTIFIED EXPERT
Top Expert 2011

Commented:
Is the problem just related to one particular company / person sending you mail and getting rejected or is this happening to everyone who is trying to send you mail?
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