CRM Email Router 2013 giving errors when deploying a rule for a new queue

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Environment:  migrated to Exchange 2013 on server 2012r2 and migrated our mailboxes over to the server. Our Exchange 2010 on server 2008r2 Environment is still up with out any user mailboxes on it.

It's still routing emails but testing hangs for a very very long time on incoming server but the outgoing passes right away when we test, I never see it finish but the window disappears. I'm assuming if this failed it would stay open? This is a new development, on the Exchange 2010 only environment this would go right away. I have made a send connector in exchange 2013 to accept connections from the CRM server.

Now when attempting to deploy the rules all the previous rules pass but the new rule will fail with the following error and not route emails to the queue.

<?xml version="1.0"?>

-<ArrayOfRequestResult xmlns:xsi="" xmlns:xsd="">




<ExceptionInfo>Microsoft.Crm.Tools.ExchangeConnectorDeployment.RuleDeploymentException: Failed to access the default store for the user. ---> System.Runtime.InteropServices.COMException: Failed to access the default store for the user. --- End of inner exception stack trace --- at Microsoft.Crm.Tools.ExchangeConnectorDeployment.RuleDeploymentSession.SendCommand(String command, String exchangeServerName, String exchangeStoreDn, String exchangeSystemDn, String exchangeMailboxDn, String crmEmailAddress, Boolean disabledMode, String exchangeServerLegacyName, String exchangeAdminMailboxDn, Boolean isExchange14, RULE_STATUS& ruleStatus) at Microsoft.Crm.Tools.ExchangeConnectorDeployment.RuleDeploymentRequest.ProcessNext()</ExceptionInfo>

<DataInfo xsi:type="xsd:string">Path:GC://CN=rchh003support,OU=CRM Queues,DC=Company,DC=com;homeMDB:CN=Support_Queues_2015,CN=Databases,CN=Exchange Administrative Group (FYDIBOHF23SPDLT),CN=Administrative Groups,CN=Company,CN=Microsoft Exchange,CN=Services,CN=Configuration,DC=Company,DC=com;sAMAccountName:rchh003support;CN:rchh003support;legacyExchangeDN:/o=Company/ou=Exchange Administrative Group (FYDIBOHF23SPDLT)/cn=Recipients/cn=rchh003supporte3d;msExchHomeServerName:/o=Company/ou=Exchange Administrative Group (FYDIBOHF23SPDLT)/cn=Configuration/cn=Servers/cn=exchange2013;</DataInfo>



I'm not sure what the error means, or how to trouble shoot it. I found a tech net that said add it to the administrator full rights  to the mailbox which I followed and completed but still get the same error. Has anyone ever come across this error in their deployment with exchange 2013 and figured a way to solve it? We also tried moving the mailbox back to 2010 and seeing if that work, which did not and giving the CRM account application impersonation abilities.

::EDIT:: I was told from the previous tech who worked on this that the test access is good and doing what its supposed to do because we are using a forwarding mailbox.
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We found that the deployment rule wizard has a problem with a high number of queues, we have taken to manually create the rule in OWA. this was is much faster as well.

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