In the ProcessMessage model of the SD-Email.Monitor workflow, insert the following components shown in between the Get User Info and Submit Ticket components: GetLocationForUser, Single Value Mapping, getUserDetailsComponent, Get Department For User, and another Single Value Mapping. The first screenshot illustrates the workflow.
The rest of the screenshots shows the component configurations and values. Here are some additional details:
In the Set IncidentLocation Single Value Mapping component, set the SystemName is set to Notification Server.
In the Set IncidentDepartment Single Value Mapping component, set the ReferenceType to Department, set the SystemName is set to Notification Server, and set the Url to [[Global].NotificationServer]/Altiris/AssetContractCommon/Manager/EditCreateResource.aspx?itemguid=[GetDepartmentforUserComponentResult.ResourceGuid] .
Bonus*
If you have multiple monitoring projects for multiple mailboxes, then another way to route tickets is by Category. In the Submit Incident component, open the Incident mapping and set Constant values for the Classification_Category_xx values.