We have configured DM. Slave server is sengind e-mail allerts independently.
When master server is sending e-mail about the same alert it is not resolving properly hostname, ip address and data values.

Data and configuration is synchronized between nodes.

Mail from Master server:

Event: Priv login failed: PROBLEM
Host: UNKNOWN
Service: Priv login failed
State: PROBLEM-2002000000015442
Date: 2014.04.24 12:25:15
Severity: Disaster
ServiceName: Priv login failed, 2002000000013934
EventId: 2002000000015442
New value: UNKNOWN
Last value: UNKNOWN
MAX for 15 minutes: UNKNOWN
MIN for 15 minutes: UNKNOWN

Mail from Slave server:

Status: PROBLEM
Host: Zabbix server (172.16.200.46)
Severity: Disaster

Event ID: 2002000000015442
Event Time: 2014.04.24 - 12:25:15
Event Duration: 0m

Alert Details:
Priv login failed

Last Item Value:
1

Where can be the problem?