Routing Calculation Schedule

The routing table must be recalculated after any routing change is made. For example, if you add or remove a gateway or connector or change a Connected Sites or Address Space property page, you must recalculate the routing so that messages are sent correctly. There are three ways to calculate the routing table. You can:

• Use the automatic system update, which recalculates the table anytime a change is detected that affects routing.
• Set up a schedule and indicate the times at which the system automatically calculates the routing table.
• Manually force recalculation at any time.

The MTA automatically reads the routing table when it detects a change. There can be a delay between the time the routing table is rebuilt and the time the MTA starts using the new information to route messages.

Note   The routing table is automatically rebuilt every time a change is made that affects routing within the site. You can manually rebuild the routing table on any server at any time by choosing the Recalculate Routing button in the MTA General property page or the Recalculate Routing button in the Site Addressing Routing property page.

Getting to the Site Addressing Routing Calculation Schedule
property page

1. In the Administrator window, choose Configuration.
2. Double-click Site Addressing.
3. Select the Routing Calculation Schedule tab.

Changing the Routing Calculation Schedule

Use the Routing Calculation Schedule property page to determine when to recalculate the routing table.

1. Select the Routing Calculation Schedule tab.
2. Select Never, Always, or Selected Times.
3. Under Detail View, select a view for the schedule grid.

Option	Description
Never	Recomputes the routing manually from the Routing property page.
Always	Continually updates routing calculations
Selected times	Updates routing calculations according to the schedule in the grid.