Problems receiving external email to an exchange public folder.

Posted on 2007-07-23
Last Modified: 2008-03-17
We have a very peculiar problem with receiving external emails into "new" public folders.

In the past we have setup a new public folder (eg: Info/Sales) then created an exchange distibution group with an external email address (eg:, we have then added the exchange public folder as the sole member of this group. The end result is that an internal or external email sent to is delivered to the public folder called Info/Sales. This setup has been working perfectly for a couple of years and continues to work perfectly on existing public folders.

I recently setup a new public folder and exchange distribution group using the same method and cannot receive any external email to this "New" public folder. If I send an internal email (using a mailbox on the same exchange server) the message is delivered without any problem however if I log into my Gmail account and send a message it bounces back with the following error message.

"The message reached the recipient's e-mail system, but delivery was refused.  Attempt to resend the message.  If it still fails, contact your system administrator"

If I add myself as a member of the new exchange distribution group I can receive the message without any problems however the message is still not delivered to the public folder which is also a member of the exchange distribution group.  

It is almost as if there is a tick box for each public folder that I cannot find that says "accept email from outside the organisation" There is a similar option to this in the exchange distribution group which is turned on and is working fine because when I am also a member of the exchange distribution group I receive the message from an external sender.

Many thanks in advance...

Question by:CLL
    LVL 13

    Accepted Solution

    Check the Client Permissions of the Public Folder. In order to receive external email, a public folder must have Anonymous assigned with Contributor rights, which is NOT the default.
    read this article:-
    LVL 1

    Author Comment

    You are a legend.... All the public folders that were not working had the Default & Anonymous permissions set to none.. I hadn't even thought it might be a permissions issue.. Thanks for all your help... :)

    Expert Comment

    Thank you.... I do have the same problem. This site is really awesome and it's worth the subscription.

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