[exim] Configuration error for "on_success"

Hello,

I'm using a gateway appliance which uses exim as mail router. I need to
compile exim and i don't have manufacturer's editme file.. when i compile
exim and try to start up, it says:

2009-07-06 09:49:58 Exim configuration error in line 434 of /etc/exim.conf:
option "on_success" unknown


Which build option do i need to turn on to start exim successfully?

Thanks

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Ahmet YAZICI