wrong alert: same mail every day

Hi, I am now receiving some alert happened last sunday, and i dont know why. Monday happened the same thing, i received this alert:

red Sun Mar 5 11:53:26 2006 rpc NOT ok, Service unavailable

how can i stop hobbit sending the same email every day? if i made a search on the file tmp/alert.chk i see a line indicating color "red" for service rpc and date "Sun Mar 5 11:53:26 2006" , is this correct? can i try to delete this line/remove the file?

hobbit is version 4.1.1 on linux debian

thanks

Gianluca