Actions doesn't work ; no media notification

[mbrand5371]

I've some trouble with actions and notification.

The configuration

Configured media:
Type 	Description  	Details
Email 	Email 		SMTP server: 'slxsys01.dmz.subdomain.domain.de', SMTP helo: 'zabbix1r.referenz.subdomain.domain.de', SMTP email: '[email protected]'

Configured item:
Description  	Key 		Update 	History 	Trends 	Type 		Status 	Applications 	Error
ICMP ping 	icmpping 	30 	90 		365 	Simple check 	Active 	- 		-

Configured trigger:
Severity 	Status 		Name  				Expression
Warning 	Enabled 	LSKN_Template_ICMP-Ping Failed 	{LSKN_Template_ICMP-Ping:icmpping. last( 0 ) }=0

Configured action:
Name  				Conditions 					Operations 					Status
LSKN_Template_ICMP-Ping Failed 	Trigger = "LSKN_Template_ICMP-Ping Failed"	Send message to Group "LSKN TFG 222 (Unix)"	Enabled
				Trigger value = "PROBLEM"

Configured users:
Users status 	GUI access 	Name 			Members
Enabled 	System default 	LSKN TFG 222 (Unix) 	bramar71, crajan79, heijoe66, lykjan57, root.mikado, seeaxe60, strhen73, zinmar76

Configured user media (eg. root.mikado)
Email 	[email protected] 	1-7,00:00-23:59; 	NIWAHD 	Enabled

The user has read/write access to all hosts.
In event view the failed ICMP-Pings are shown. But there's no notifiaction. Audit of actions is reporting no actions.
The count of notification's is zero :-(

EMail set up is tested:

[root@slxsys01 ~]# telnet slxsys01.dmz.subdomain.domain.de 25
Trying 10.100.193.224...
Connected to slxsys01.dmz.subdomain.domain.de (10.100.193.224).
Escape character is '^]'.
220 slxsys01.dmz.subdomain.domain.de ESMTP Sendmail 8.13.8/8.11.6; Wed, 29 Jul 2009 10:44:56 +0200
helo zabbix1r.referenz.subdomain.domain.de
250 slxsys01.dmz.subdomain.domain.de Hello slxsys01.dmz.subdomain.domain.de [10.100.193.224], pleased to meet you
MAIL FROM: [email protected]
250 2.1.0 [email protected]... Sender ok
RCPT TO: [email protected]
250 2.1.5 [email protected]... Recipient ok
DATA
354 Enter mail, end with "." on a line by itself
Test
.
250 2.0.0 n6T8iujZ000819 Message accepted for delivery

It works fine, if i change configured action to:

Configured action:
Name  				Conditions 					Operations 					Status
LSKN_Template_ICMP-Ping Failed 	Trigger value = "PROBLEM"	Send message to Group "LSKN TFG 222 (Unix)"	Enabled

Any ideas ?
Regards, Marcus