Re: Help with rule, please.

Edward Sabol advised Doctor What,

S> You probably just need to put parens around the first $s. Without the
S> parens, procmail thinks the variable name is $sCron which is probably
S> undefined.

Stan Ryckman offered,

R> Or you can write ${s}Cron, which is probably (slightly) more efficient
R> than ($s)Cron.

One could also write $s(Cron) should one be so inclined.