[syslog-ng] Time zone problem - take 2

Hi, I tried to configure the time zones about the manuals, but it is not working for me and I have no more ideas... Our syslog-ng server located in Cambridge, US (UT-04:00) and one of our client computers is in Arizona (UT-07:00). I tried to set up the config files with these time zones. I attached the config files to my mail, could you please help to solve this problem? Thanks for the help! Tamas