How to change the default email server wide (cpanel compatable)

replace :blackhole: :fail: — /etc/valiases/*
replace :blackhole :fail: — /etc/valiases/*
replace blackhole: :fail: — /etc/valiases/*
replace blackhole :fail: — /etc/valiases/*
replace ” fail:” ” :fail:” — /etc/valiases/*
replace /dev/null :fail: — /etc/valiases/*
cd /etc/valiases/
grep fail * | grep -v ” :fail:”