Right-click a routing group SMTP connector, click
Properties, and then click the Delivery Options
To specify times when messages are sent through the connector,
under Connection Time, select one of the standard values in
the drop-down list. The default is Always run.
- OR -
Click Customize and select the appropriate connection
times on the timetable grid. To change the level of detail on the
grid, in Detail view, select 1 hour or 15
To specify delivery times based on message size, select Use
different delivery times for oversize messages. In Oversize
messages are greater than (KB), type the size, in kilobytes, of
messages you want to designate as oversized. Under Connection
time, specify times when oversize messages are sent, as
described in the previous step.