Exchange 2003 Distribuition lists (email isssue)

I have a distribution list setup in my exchange org. that includes two external contacts and some internal employees. Now if someone internally sends an email message to the distribution list everyone on gets the email as expected.  However when an external person (say from hotmail) sends an email to that same distibution list only the internal employees on that distribution list receive the email... Is this normal?

I used exchange message tracking and I see the message coming in and when I look details of the message tracking  I don't see the external contact listed in the exchange header. I have confirmed the distribution list is setup to accept mail from everyone.

All A Records, Reverse lookups, and MX are valid.
n_t_schultzAsked:
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n_t_schultzConnect With a Mentor Author Commented:
Well I have located the solution to this issue.

KB839949

By default Exchange willl not allow external users to email all members in a distribution list in particular any members that are external contacts. To allow this you need to open up the smtp virtual server on the backend server  Then cliekthe ACCESS tab, and then chose authentication and check the box to resolve anyonymous e-mail.

You can also tell the distrubution list what exchange server to use to expande the list by right clicking the distribution list properoties --> Exchange Advanced and then choose the expansion server for the server responisble for expanding the dist. list.


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robrandonCommented:
Confirm the properties of the Contacts are setup such that there are no Message Restrictions on the Exchange General tab and that they accept messages from everyone.
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n_t_schultzAuthor Commented:
Exchnage general tab for the External contact was\is set to:

Receiving message size: Use Default Limit
Message Restrictions Accept Messages: From Everyone

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