Unable to send emails to a shared mailbox from an external source in Exchange 2007

Hello Experts,

I have a strange problem that I'm pulling my hair out over (and I don't have that much to spare :-) ).  We have an Exchange 2007 environment.  I have created a security group to access a shared mailbox and then created the shared mailbox using the following Powershell commands:


new-mailbox -name:'MyCompany Trade Confirmations' -OrganizationalUnit:'MyCompany.local/ExchangeResources' -database 'excms\sg2\mbsx2 -userprinciplename:'MyCompanytradeconfirmations@azasrs.gov' -shared

add-mailboxpermission 'MyCompany trade confirmations' -user:'mycompany trade confirmation permission group' -accessrights:fullaccess

ad-adpermission 'mycompany trade confirmations' -user:'mycompany trade confirmations permissions group' -extendedrights:send-as -accessrights:readproperty, writeproperty -properties:'personal information'

We have Exchange cache mode enabled, so the newly created shared mailbox is not showing up in Outlook yet.  However I can access it using OWA.

When I send an email from my Outlook to the new shared mailbox, the message is delivered as expected.

When I send a message from an external mailbox to the new shared mailbox, I get the following:

  mycompanytradeconfirmations@azasrs.gov on 5/20/2013 9:19 AM
  The destination server for this recipient could not be found in Domain Name Service (DNS). Please verify the email address and retry. If that fails, contact your administrator.
  <testcorp.com #5.4.1 smtp;550 5.4.1 mycompanytradeconfirmations@azasrs.gov: Recipient address rejected: Access Denied>

Any help on resolving this would be greatly appreciated.

Nick
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ndalmolin_13Asked:
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bepsoccer1Connect With a Mentor Commented:
Are you using Edgetrasnport?  If so, run start-EdgeSynchronization and restart the transport service on the Edge servers.  This is the quickest way for it to pickup new address if they haven't populated out to the Edge transport servers.  As for the GAL you can initiate an update by following these instructions, though it still may take some time to show up.  http://technet.microsoft.com/en-us/library/bb266966(v=exchg.80).aspx
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ndalmolin_13Author Commented:
It was the Edge.  Thanks.
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