Thanks a lot! Options: --debug --cfid was very useful. I had found at least one place, which most probably caused the problem.

I would like to explain a bit:

In alerts config. I had used some variables like:

$HOSTS_PROD=host1,host2,host3 $HOSTS_TEST=thost1,thost2 $HOSTS_DEV=dhost1

And some rules, including for $HOSTS_DEV (some separate as well as some together with $HOSTS_TEST) and merged variables too: $HOSTS_ALL=$HOSTS_PROD,$HOSTS_TEST,$HOSTS_DEV

This worked fine until we switched of dhost1 host (reason does not matter) and I had commended variabled definition:

$HOSTS_DEV=dhost1

But rules remained. As result there was rules for empty element

development

HOST=$HOSTS_DEV SERVICES=$SVC_DB_BUSN COLOR=red,yellow,purple MAIL=$CM_SUPPORT_DBA DURATION>15m REPEAT=60m RECOVERED DURATION<180m FORMAT=PLAIN

this rule really resulted to: HOST= SERVICES=dbinvobj COLOR=red,yellow,purple MAIL=support at maildomain.eu DURATION>15m REPEAT=60m RECOVERED DURATION<180m FORMAT=PLAIN

This rule most probably worked out in some cases together with correct one.

Best regards,

Andrey Chervonets

SIA CoMinder http://www.cominder.eu/