Service notifications not being sent (host notifications are)

[Sean McAvoy]

Hello,
I'm having problems getting service alerts. I've attached my configs for
1 service. 
I've got 2 distributed servers, and one central that does all
notification (but no active checks, just host checks).
I'm receiving host notifications, but no service ones.
The services are in a non-ok state, host notifications is turned on, as
well as service notifications. 
I've gone over the filter that decides whether to send out a
notification, and everything *seems* ok. I've attached a service, as
well as the template it uses.
Any ideas where I can look to see why they're not being sent?
Any help would be appreciated!

-Sean

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define service{
	name				client-low
	active_checks_enabled		1
	passive_checks_enabled		1
	parallelize_check		1
	obsess_over_service		1
	check_freshness			1
	freshness_threshold		2100
	check_command			notify-by-email
	notifications_enabled		1
	event_handler_enabled		0
	flap_detection_enabled		1
	process_perf_data		1
	retain_status_information	1
	retain_nonstatus_information	1
	max_check_attempts		3
	normal_check_interval		15
	retry_check_interval		2
	contact_groups			technical-support
	check_period			24x7
	notification_interval		30
	notification_period		workhours
	notification_options		w,c,r
	register			0
}
-------------- next part --------------
define service{
	use			client-low
	host_name		vpn.clienta
	service_description	Office - clienta tunnel
	check_command		check_ipsec_tunnel!192.168.109.1
}