After we updated to Exchange 2007 SP1 to Roolup 7 our HUB/CAS server getting spamed by this event warning. Also seen af event id 5, 6 , 7
Event Type: Warning
Event Source: MSExchange Web Services
Event Category: Core
Event ID: 6
Unable to send a notification for subscription FwBzcnZleGMwMy5hYXMuaXRzLm5qYS5kaxAAAAB2u1k3cmLBQJP2SiWXmT9t. (Send attempts: 5)
Anyone know how to fix this error?