Problem

Recently while publishing CRM 2011 email router on our CRM 2011 system we started seeing following error

#17174 – An error occurred while validating the e-mail message with subject “email subject” in mailbox “mailbox email”. Microsoft.Crm.Tools.Email.Providers.EmailException: E-mails for address “mailbox email”. in forward mailbox could not be processed as the e-mail address is not associated with any approved forward mailbox user or queue record in CRM.
at Microsoft.Crm.Tools.Email.Providers.CrmPollingMailboxProvider.CheckForApprovedForwardMailboxUsersOrQueue(EmailMessage emailMessage)
at Microsoft.Crm.Tools.Email.Providers.ExchangePollingMailboxProvider.ValidateMessageInternal(EmailMessage emailMessage)
at Microsoft.Crm.Tools.Email.Providers.CrmPollingMailboxProvider.ValidateMessage(EmailMessage emailMessage)
at Microsoft.Crm.Tools.Email.Providers.CrmPollingMailboxProvider.Run()

Resolution

Step 1 -> Log in to CRM system and go to Settings.

Step 2 -> click business management and then Queues.

Step 3 -> select view called “Queues: Primary Email (Pending Approval)” , this will return relevant queues for which email address is not approved yet

Step 4: select all of them and hit Approval email button , this should resolve this issue.

Hope this helps

Regards,
MayankP :)