2010 Exchange Server Calendar Request Will Only Send To Local Domain

Server 2012 running Exchange 2010sp3 - When user sends Calendar/Meeting request it will only go to local domain users.  If you send it out to someone outside the local domain it doesn't go anywhere even though it appears it did.  Is there a setting I missed somewhere?  Any help would be greatly apppreciated
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David Paris VicenteSystems and Comunications  Administrator Commented:
Do you have the external contacts created on Exchange 2010?
porkchop64Author Commented:
I do not believe so, does that have to be setup to send external meeting request?
David Paris VicenteSystems and Comunications  Administrator Commented:
It´s not strictly necessary but will be a good procedure having that external contacts on GAL.

But you can check somethings in that particular calendar.

Please follow this commands and see the options for that calendar.
Get-CalendarProcessing -identity alias| fl

And check if Process External Meeting Messages is true or false
if its false please do this and check again:
Get-mailbox <alias> | Set-CalendarProcessing -ProcessExternalMeetingMessages: $true

If you need to do for all organization or in the future examples follow:
for all mailboxes in a MailboxServer

Get-mailbox -server MailboxServerName | Set-CalendarProcessing -ProcessExternalMeetingMessages: $true

For all mailboxes in a Mailbox Database

Get-mailbox -Database "Mailbox Database" | Set-CalendarProcessing -ProcessExternalMeetingMessages: $true

Also every time u create a mailbox u will have to set "ProcessExternalMeetingMessages" for it specifically. You cant make it default somewhere, except running the command after u create the mailbox.

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porkchop64Author Commented:
Worked like a charm!  Awesome
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