Assembly: Microsoft.SqlServer.Smo (in microsoft.sqlserver.smo.dll)
A retry schedule specifies one retry interval for a delivery protocol. A ProtocolRetryScheduleCollection can contain multiple retry intervals.
The retry schedule is for a distributor work item; each work item with unsuccessful deliveries is retried on the specified schedule. During each retry, Notification Services retries only those notifications that have not been sent successfully.
If you do not provide a retry schedule, Notification Services does not attempt to deliver failed notifications.
Each retry interval is relative to the previous attempt, not to the original failure time.